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revision 1.41 by heimbach, Fri Jul 13 18:08:14 2001 UTC revision 1.1068 by mlosch, Mon Feb 16 09:13:18 2009 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/exf: add capability to bypass interpolation for runoff
8      by setting yet another CPP-flag
9    o autodiff
10      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
11      allows to switch to single-prec common blocks;
12      corresponding switch occurs in tamc.h, integer isbyte
13      TAF store directivs "byte" and "kind" seem equivalent;
14      Most tamc.h have been updated correspondingly.
15    
16    checkpoint61i
17    o autodiff:
18      fix autodiff_sore/_restore indices for obcs
19      (spotted by I. Hoteit, M. Mazloff)
20    o pkg/autodiff, pkg/ctrl:
21      Add flag to reduce all tapelev I/O to single-prec.
22      In data.ctrl set
23        doSinglePrecTapelev = .TRUE.
24    o model/src/ini_curvilinear_grid.F: check in hack for SX8 compiler
25      to make sure that recip_dxV and recip_dyU are never zero, until we
26      have a proper exchange for them. Most compilers do not seem
27      to mind divisions by zero in the overlaps, as long as the results are
28      not used anywhere, but sxf90 does.
29    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
30      real fresh water flux (not yet)
31    o pkg/mdsio & rw:
32     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
33     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
34    o pkg/flt:
35     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
36       init_fixed & ini_varia.
37     - clean-up & simplify linear interpolation S/R:
38       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
39     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
40     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
41     - add vert. coordinate & horiz. indices to output files.
42     - change vertical position in initial condition, from index to depth [m].
43     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
44       (easier to get to a curvilinear grid) ; delX,delY no longer used.
45    o pkg/ggl90: a few modifications:
46     - fix bottom boundary condition, and interpolation of KappaE
47       near top and bottom
48     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
49     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
50     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
51    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
52      (maintain temporary backward compatibility, until next checkpoint)
53    
54    checkpoint61h
55    o pkg/diagnostics with "periodic averaging diagnostics":
56      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
57    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
58    o pkg/obcs: fix loop ranges for balancing code
59    o pkg/flt:
60     - improve criteria for finding which tile owns a float.
61     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
62    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
63      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
64      with ocean biogeo)
65    o pkg/flt:
66     - do some cleaning and fix the restart ;
67     - add output.txt in flt_example/results to get this pkg tested.
68    o genmake2: add an EXTENDED_SRC option and flag.
69       for now, cannot be turned on on command line (only through genmake_local)
70    o pkg/mdsio: read/write vector:
71     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
72     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
73       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
74     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
75      (drop to 4 digits matching for grad). But this test does not look very
76      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
77    
78    checkpoint61g
79    o pkg/flt:
80      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
81       + make OPTIONS file more standard.
82      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
83      - fix _BYTESWAPIO CPP-Flag
84      - standard reading of file-parameter "data.flt"
85      - fix argument list of S/R FLT_RESTART
86      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
87    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
88    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
89      a still unfixed compiler/optimization bug
90    
91    checkpoint61f
92    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
93      update results of global_ocean.cs32x15.icedyn test.
94    o move getcon.F from model/src to pkg/fizhi.
95    o pkg/exf: add parameter for extrapolation of temp up to the surface
96       and option to prevent negative evap (in bulk_largeyeager04 only).
97    o Prather Advection scheme: fix tracer conservation for divergent flow
98      (e.g., when using NonLin Free-Surface).
99    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
100    o gmredi (Visbeck-variable-K):
101     - add more parameters to Visbeck-variable-K.
102     - use a 5 points average for dSigmaR in Visbeck-K calculation
103       (more "homogenous": same stencil and same weights as in dSigmaH)
104     - update output of ideal_2D_oce experiment.
105    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
106      (#undef REAL4_IS_SLOW)
107     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
108       coordinate variable
109     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
110       (surface forcing fields), removes some of the functionality
111     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
112     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
113       probably not all: copy _RS surface flux fields to RL field before
114       calling DIAGNOSTICS_FILL
115     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
116       real*4 (CALL EXCH_*_RS) versions.
117     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
118       (generate new output).
119    
120    checkpoint61e
121    o gmredi (Visbeck-variable-K):
122      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
123      - change computation of Visbeck-K where Slope > Smax :        
124        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
125        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
126    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
127      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
128    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
129    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
130      does not become too large (to avoid precision problems in implicit-diffusion
131      solver); update ideal_2D_oce output.
132    o pkg ggl90:
133      - in ggl90_cal.F: compute only one set of visc/diff, used to
134        step forward TKE/T/S/momentum
135      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
136        have Prandlt =1)
137    o gmredi (fm07):
138      - add lower limit on Transition layer thickness + lower limit on 1/lambda
139      - allow to set few more params from data.gmredi
140    o pkg ggl90:
141          - add missing sqrt(2) factor in computation of mixing length
142            scale in ggl90_calc.F
143            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
144    
145    checkpoint61d
146    o adjoint modifs
147      - adapt to new field rhoInSitu
148      - allow to revert from StoreDynVars2D, StoreDynVars3D
149        to individual fields
150        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
151    o store 3-D (in-situ) density in commom block (DYNVARS.h)
152     - save 1 rho computation.
153     - no longer modify T & S inland when using down_slope pkg.
154    o gad_som : allow to switch to SOM advection for T & S without corresponding
155      pickup files (using new S/R: MDS_CHECK4FILE).
156    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
157      (for useSingleCpuIO to work in multi-threaded)
158    o pkg/shelfice:
159     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
160       with SHELFICEtopoFile in data.shelfice
161     - move code for reading ice shelf topography and modifying hFacC into separate
162       subroutines of the shelfice package
163     - separate initialisation of "fixed" and "variable" variables
164     - kTopC is not (yet) replaced by kSurfC, although this is possible
165    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
166    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
167      and rename:
168      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
169      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
170    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
171    
172    checkpoint61c
173    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
174      to add mass source/sink of fluid in the interior (3-D generalisation
175      of oceanic real-fresh water flux).
176    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
177    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
178    o new pkg: down_slope
179      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
180      - presently, modify T & S inland (dwnslp_calc_rho.F).
181        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
182      - implementation for ocean in P-coords not tested.
183      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
184    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
185      (to facilitate conversion of oceanic pkg to p-coordinate).
186    o change FIND_RHO to FIND_RHO_2D :
187      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
188    o new pkg: cheapaml
189    
190    checkpoint61b
191    o exch2:
192      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
193      - no longer depend on the order sequence (N,S,E,W).
194      - 3rd exchange no longer needed (tested with 24 tiles).
195      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
196      - exch_UV_A-grid readily available (but not yet tested).
197      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
198      (both are no longer needed) in exch_uv: no effect in forward run; but
199       get truncation error differences with adjoint exch.
200    o exch2:
201     - change index-bounds storage (moved from target to local tile,
202       more intuitive this way) ; rename/remove some variables.
203     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
204    
205    checkpoint61a
206    o exch2/matlab-topology-generator:
207      fix bug in index bounds for N-S internal exchange (hard to tell if this
208      had any effect on the solution).
209    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
210      is exceeded
211    o testreport: modify syntax of awk, so that it works also with
212      awk, and not only with nawk and gawk
213    
214    checkpoint61
215    o autodiff
216      Change default for TAF usage by removing argument '-nonew_arg'
217      This changes TAF subroutine argument list (ordering of active var.)
218      Omission of this flag leads to incompatibility w.r.t. TAMC
219      To restore TAMC-compatibility, need following modifs:
220      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
221      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
222      Tested TAF version is 1.9.22
223      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
224    
225    checkpoint60
226    --->>> This is the last checkpoint for which generating the adjoint
227    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
228    --->>> by default.
229    --->>> Future checkpoints will ommit this flag by default.
230    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
231    o pkg/grdchk: Add gradient check to etan0 perturbations.
232    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
233    o pkg/autodiff: more flexibility in zeroadj.
234      model/src: modifying do_oceanic_phys.F accordingly.
235    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
236    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
237      special setup of gmredi for which the adjoint is stable
238      enough for parameter optimization.
239    o bridging the gap between eddy stress and GM.
240      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
241          along with a change in CPP option (now ALLOW_EDDYPSI).
242      -> when using GM w/ GM_AdvForm:
243          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
244          is applied either in the tracer Eq. or in momentum Eq.
245          depending on data.gmredi (intro. GM_InMomAsStress).
246      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
247      The key modifications are in model/src/taueddy_external_forcing.F
248      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
249    
250    checkpoint59r
251    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
252      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
253      fix option to read coriolis(@ cell-corner) from files with CS-grid.
254    o pkg/mnc: add some attributes to standard 1D-coordinate variables
255    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
256      mass points, when using mnc for output
257      - add runtime parameter (missing_value, missing_value_int) to override
258        default (which is the value of getcon('UNDEF'))
259    o pkg/mnc: prepare mnc for the actual use of missing values with the
260      diagnostics package: small fix in mnc_cw_readwrite.template and more
261      initialisation of never used fields
262      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
263      versions
264    o pkg/thsice/thsice_ini_vars.F added default initial values so that
265      thermodynamics sea ice solver does not blow up when some initial fields
266      are missing.
267    o move from external_forcing_surf.F to ini_forcing.F
268      the p-coord. hack consisting in using pLoad to set phi0surf ;
269      update output of tutorial_global_oce_in_p (affected @ truncation level).
270    o Freshen up a bit hs94.1x64x5, notably:
271      remove rotationPeriod and tRef=5*0. (adjoint only), and add
272      exactConserv=.TRUE.
273    o pkg/generic_advdiff:
274      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
275      applies to files where Temperature & Salinity 2nd Order moments are used.
276    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
277      this uses a dynamically allocated internal state data structure
278      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
279      and requires a fortran 90 compiler
280    
281    checkpoint59q
282    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
283       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
284    o Refresh tutorial_global_oce_biogeo, notably:
285      - change bathymetry (put back seamounts in ACC, use hFacs)
286      - change EOS (POLY3 --> JMD95Z)
287      - use Bryan-Lewis vertical diffusivity
288      - use multidimensional advection
289      - remove old virtual virtual in dic pkg, now done through ptracer pkg
290      - change a couple of parameters in dic pkg
291    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
292    o pkg/obcs: change default to OBCSfixTopo = .true.,
293      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
294      - replace "debugMode" with "debugLevel .GE. debLevB"
295    o implementation of TAF directives for gchem,cfc,dic
296    o remove "exp5" (replaced by tutorial_deep_convection).
297    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
298      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
299      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
300      --> changes results in exp4, seaice_obcs
301    o tutorial_deep_convection :
302      update the set-up and increase resolution and domain size ; start
303      from pseudo initial conditions = output at t=120mn in order to see
304      something happening when running testreport.
305    o pkg/seaice: add os7mp as an advection scheme
306                  add check for advection schemes
307                  add a flag for restoring T and S underneath sea ice
308    o pkg/my82: add netcdf-support and diagnostics
309    o thsice pkg:
310      - Now hsMax limits snow height by turning it into ice following
311        flooding scheme (and now conserving energy)
312      - Slight rewriting of the formula in thsice_calc_thick.F
313      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
314      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
315    
316    checkpoint59p
317    o gchem / dic / cfc :
318      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
319      - add new parameter files: "data.dic" & "data.cfc" ;
320      - various re-arrangement in initialisation & header file ;
321      - fix tutorial_global_oce_biogeo for multi-threaded test.
322    o pkg/dic: test for "pickup_dic" file when restarting ;
323      if no pickup-file, can restart with a re-initialised pH (same as it did
324      before) providing pickupStrictlyMatch is set to False.
325    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
326      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
327    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
328      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
329    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
330     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
331       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
332    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
333       scheme to use for vorticty-term ;
334     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
335       (with default selectVortScheme, return to original discretisation)
336     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
337    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
338    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
339      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
340      also fix diagnostics VISCAHW & VISCA4W.
341    
342    checkpoint59o
343    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
344    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
345      move a few statemens out the main loop into separate loops
346    o pkg/shelfice:
347      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
348        (kg/m^2/s), does not break tests, because in verification/isomip,
349        rhoConstFresh=rhoConst (by accident)
350      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
351      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
352        new file model/src/seawater.F, so that they are available for all pkgs.
353      - convert potential temperature into in-situ temperature. This changes the
354        isomip tests => update tests
355    o add a flag writePickupAtEnd (default=true) to be able to suppress
356      writing a pickup at the last timestep
357    o tools/mpack-1.6 :
358      - disable automake (not working) and autoconf (not needed).
359      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
360        also cleaner with much less compilation warnings.
361    o pkg/profiles:
362      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
363      (for "less than 32 characters name" compiler requirement)
364    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
365      conditions that have a different sampling frequency than S/T/U/V obcs
366    o pkg/diagnostics (stats-diags):
367      - fix global Min/Max in case 1 processor get only empty tiles
368    o genmake2: replace (4 times)
369         make genmake_tc_1.o >> genmake_warnings 2>&1
370      with
371         COMM="$CC $CFLAGS -c genmake_tc_1.c"
372         echo $COMM >> genmake_warnings
373         $COMM >> genmake_warnings 2>&1
374      to make genmake2 always see the value of CC as specified in the optfile.
375    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
376      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
377      - modify verification advect_cs test to test SOM-advection on CS-grid.
378    o pkg/ctrl:
379      - Rewrite of ctrl_map_ini_ecco.F,
380        introducing a generic routine (ctrl_map_ini_gen.F).
381      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
382    
383    checkpoint59n
384    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
385      number in dedicate array "hdiag":
386      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
387        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
388      - many small changes (integer format) for large number of diagnostics
389      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
390        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
391    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
392      usingSphericalGrid, this allows to define the rotated grid coordinates
393      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
394      geographical coordinates according to the inverse of the rotation defined
395      by the Euler angles, so that Coriolis parameter and online-interpolation by
396      exf works with the geographical coordinates on XC/YC/XG/YG.
397      Naturally, this feature does not work with all packages, so some
398      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
399      profiles), because there the coordinates are assumed to be regular
400      spherical grid coordinates.
401    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
402      - introduce isopycnal diffusion coefficient control.
403    o tools/adjoint_options:
404      - additional control vector components.
405    o pkg/mnc: have mnc create marginally meaning full coordinate variables
406      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
407    o pkg/mypackage:
408      - add example of read/write pickup for state-var ;
409      - add entry points to the main code for state-vars diags & write-pickup.
410    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
411      transitions for useExfYearlyFields
412      - add new subroutine that determines the file to read from for
413        use*YearlyFields = .TRUE. and .FALSE.
414      - add a verification experiment to global_with_exf that tests
415        useExfYearlyFields with USE_EXF_INTERPOLATION defined
416    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
417      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
418      subroutines (which could be generated from a template, because they are
419      almost identical), for now they are included in obcs_prescribe_read.F for
420      simplicity
421    o pkg/exf:
422      - add a little more diagnostic to exf_interp_read (in analogy to
423        mds_read_field, can be turned off with debugLevel < debugLevA=1)
424      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
425        ugly but fast by unrolling short inner loops, inserting a unroll=8
426        directive in routine lagran, and splitting a loop and making do while the
427        outermost loop (the latter requires the intoduction of index arrays)
428    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
429    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
430      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
431    o verification/seaice_obcs: updated for restart test and latest options
432    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
433      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
434      for now this is only available for the C-grid code and also within
435      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
436    
437    checkpoint59m
438    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
439      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
440    o gad_som : fix flux output (& diagnostics) to have same units as other  
441      advection scheme fluxes (was previously multiplied by deltaT).  
442    o added verification/seaice_obcs both to test seaice open boundaries
443      and to provide an example matlab scrpt for generating them
444    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
445    o pkg/salt_plume: clean up salt_plume_frac.F to
446      remove redundancy in PlumeMethod 1 and 4
447    o pkg/kpp: added saltplume diagnostics
448    o pkg/obcs and pkg/seaice:
449      - do not set uice and vice to zero when OB*icefile are unspecified
450      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
451      - moved seaice tracer obcs after call to seaice_growth
452    o pkg/salt_plume: added various options for salt plume depth
453      criterion and for vertical distribution of the salt
454    
455    checkpoint59l
456    o pkg/ptracers: new version of ptracers pickup:
457      read meta file and write only fields which are needed to restart.
458      ( same logic as main pickup file ; also using pickupStrictlyMatch )
459    o pkg/seaice:
460      - add timescale for melting due to warm mixed layer as a means of
461        setting SEAICE_availHeatFrac more conveniently
462      - add a CPP-flag/runtime parameter check for flooding algorithm
463      - reformulated availHeat in seaice_growth.F to be independent of AREA
464    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
465      unit changes
466    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
467    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
468      SX vector computer.
469    o pkg/seaice:
470      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
471        seaice forcing fields can now be read only through pkg/exf
472      - removed some unused halos
473    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
474    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
475      or U/VICE from U/VWIND before computing U/VSTRESS
476    
477    checkpoint59k
478    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
479      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
480    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
481      all experiments pass when compile with un-initialised var. checking option.
482    o added pkg/salt_plume
483    o script to test restart (for now, in MITgcm_contrib/jmc_script)
484    o pkg/seaice: new read/write pickup version.
485      read meta file and write only fields which are needed to restart.
486      ( same logic as main pickup file ; also using pickupStrictlyMatch )
487    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
488    o lab_sea.hb87: modify the domain & update output.hb87.txt :
489      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
490      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
491      process. Fixed here by closing the domain at the Northern boundary.
492    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
493    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
494      a set of consecutive levels in/from a 3-D array.
495    o pkg/ptracers:
496      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
497      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
498    
499    checkpoint59j
500    o in pkgs: dic, obcs, offline, rbcs:
501      standard way to compute coeff. for time interpolation between 2 time reccords
502      which retains full precision (& make results less dependent on compiler).
503      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
504    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
505      packages instead of reading ice cover and wind speed separately
506    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
507     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
508      to allow to compile customized code before the update)
509    o cleaning-up:
510      - fix CPP instruction syntax in pkg/obcs
511      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
512        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
513      - fix some threads issue in IO parts.
514    o pkg/dic:
515      - add tons of "_d 0" (--> much better testreports !)
516       and then update outputs of tutorial_global_oce_biogeo
517    o pkg/mom_fluxform:
518      add a special version of momentum advection intended to conserve momentum
519      next to a bathymetry step or a coastline edge. (default = off = #undef)
520    o new read/write pickup version:
521      - for now, only implemented for main (mdsio) pickup file.
522      - write out only what is needed to restart; merge pickup_nh , pickup_ph
523        and main pickup together.
524      - read meta file; read only what is needed to restart; stop if a field
525        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
526        if it make sense (even if the restart is not perfect).
527      - if no meta file, assume that pickup to read corresponds exactly to
528        a pickup that would currently be written.
529      - read pickup written in the old format (until checkpoint59i) if it
530        recognizes an old meta file (no field-list).
531      - add a meta file in exp. which starts from a pickup: 2 cases:
532        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
533         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
534        b) a meta file describing the content of the associated pickup file
535         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
536    o pkg/mdsio & pkg/rw:
537      - new routine to read a meta file ; new set of routine to read
538        Multiple-fields file (with meta file).
539    o added open boundary conditions capability for seaice
540        HSNOW, HSALT, UICE, and VICE
541    
542    checkpoint59i
543    o adjoint:
544      * fix multiDimAdvection adjoint
545        (partial recomputation problem by TAF for fVerT(:,:,kDown)
546        and comlev1 size definition (maxpass vs. max. number of tracers)
547      * verification/global_ocean.90x45x15 adjoint now tests
548        NLFS and multiDimAdvection using DST3 (=30)
549      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
550    o pkg/kpp: add "_d 0" to real constant (if missing);
551      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
552      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
553    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
554      for internal parameters related to restart process (formerly from PARAMS.h)
555      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
556    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
557      as argument. (only atm2d & obcs write_pickup have not yet been updated)
558    o pkg/monitor:
559      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
560      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
561      - account for deep Atmosphere factor and density factor (anelastic)
562    o added open boundary conditions capability for seaice HEFF and AREA
563    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
564      thermodynamics
565      - requires a little reorganization, which affects the testreport results
566        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
567        so that now the conservative form is tested
568      - add a few comments
569    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
570    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
571    o add new diagnostics to seaice: advective, diffusive fluxes (only for
572      multidim-advection, for scheme 2 they are not filled) and transports,
573      thermodynamic growth rates
574    o change units of EmPmR (inside the code, + within coupling interface)
575      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
576      Affects results @ truncation level (cg2d match) and update output of
577       experiments: lab_sea(6), global_ocean.90x40x15(10),
578      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
579      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
580      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
581      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
582    
583    checkpoint59h
584    o pkg/exf:
585      - improve vectorization by moving if-statement out of loops in
586        exf_mapfields, exf_radiation
587      - exf_bulkformulae.F: introduce 2D fields and vectorize code
588    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
589    o testreport:
590      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
591        monitor & update offline_exf_seaice exp. output.
592      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
593    o pkg/seaice:
594      - bug fix in the evp solver: boundary conditions were affected be
595        masking of zMax/zMin (changes results)
596      - minor bug fix in boundary conditions in seaice_calc_strainrates
597        (changes results for no_slip)
598      - seaice_lsr.F: make interpolation of eta dependent on boundaries
599      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
600      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
601        stress formulation and no-slip boundary conditions
602    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
603      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
604    o pkg/seaice: a first HSALT time stepping equation has been checked in
605    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
606      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
607      without requiring DO-IF statements
608    o pkg/thsice:
609      use continuous power-law function for partition of energy between lateral
610      melting/freezing and thinning/thickening ; old code using step function
611      still available with #undef THSICE_FRACEN_POWERLAW
612      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
613    o testreport: change AD testing : check against results/output_adm.txt
614      using same scripts as for forward test.
615    
616    checkpoint59g
617    o adjoint testing: in preparation for changing testreport:
618      - output format: cost and grad written on separated lines
619      - ad output results in directory "results" (instead of "results_ad")
620    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
621    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
622    o pkg/ecco: allow user defined cost function contributions
623    o testreport:
624      Allow to choose (per experiment) the list of tested output variables
625       and the main variable (used to issue a pass/FAIL ) ;
626      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
627      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
628      Also modify printing of summary:
629       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
630       b) echo the list of tested variables in the individual summary.txt of
631          each experiment.
632    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
633      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
634      (but still depend on the tile decompostion of the domain).
635    o pkg/seaice: change a discretization detail to make the B-grid code
636      "more symmetric". This change is likely to remove all "ridges/leads" that
637      where quasi-aligned with the grid in B-grid solutions. It may also be
638      the solution to the stress coupling issues with the B-grid.
639    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
640      remove .cvsignore from input dir. (since testreport no longer run here).
641    o pkg/thsice:
642     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
643     - fix reshaping of sea-ice just after advection:
644       melt all the ice only if ice-volume is too small.
645     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
646       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
647     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
648    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
649      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
650    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
651      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
652      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
653      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
654      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
655      -> update output.txt
656    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
657     this affects truncation error: -> update output.txt of exp:
658      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
659      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
660    
661    checkpoint59f
662    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
663    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
664      a bounded range (in forward mode)
665    o pkg/ecco, ctrl, autodiff and mom_common:
666     internal parameter controls, completements of implementations
667    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
668    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
669      (not seem any difference in testing results).
670    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
671       at face corners.
672    o pkg/generic_advdiff:
673     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
674      loop range indices for computing vertical advection tendency
675      and do the calculation in the interior only (no overlap) ;
676      for now, only implemented for SOM advection (to save CPU time).
677     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
678    o exch2 adjoint
679      First set of changes:
680      - add exch2 hand-written adjoint templates
681      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
682        This will require cleanup in pkg/autodiff/*.F
683        (changed routines currently kept separate in verif. code/)
684      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
685        that used to hide exch2 or cubed-sphere specific code
686        (commented via 'cph-exch2')
687    o pkg/seaice
688      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
689    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
690       output of global_ocean.cs32x15.thsice .
691    
692    checkpoint59e
693    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
694      for B-grid vector (not yet tested) and C-grid vector (<- only used
695      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
696    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
697      (#ifdef ALLOW_SALT_PLUME)
698    o gather_2d/scatter_2d: removed halo regions
699    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
700      scheme and the corresponding test case (under front_relax dir). For now,
701      only available with Skew-flux form and not yet tested in realistic set-up.
702      adjoint: store directives updated, but gradient checks deteriorated,
703      so maybe GM/Redi adjoint is now broken.
704    o seaice adjoint
705      * add AREA, HEFF, HSNOW as control variable
706        (should not change lab_sea results)
707      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
708    o pkg/seaice:
709      * added computation of saltFlux in seaice_growth;
710        For time being, sea ice salinity is assumed constant
711        contribution of snow flooding to freshening of sea ice is neglected.
712        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
713        defaults to 0.0 in order to maintain backward compatibility.
714        Typical values for SEAICE_salinity are 4 to 10 g/kg.
715      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
716      * added SEAICE_availHeatFrac, which specifies fraction of surface level
717        heat content used to melt or grow ice
718      * commented out cap of HICE: it helps keep ice thinner
719      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
720      * applied OBCS T/S mask to HEFFM sea ice mask
721    
722    checkpoint59d
723    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
724     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
725     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
726    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
727     and change default value of parameter "GM_Small_Number";
728     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
729       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
730       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
731    o pkg/ecco: cost function when applying pkg/smooth to controls
732    o pkg/ctrl: add forcingPrecond run time parameter
733    o pkg/seaice:
734     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
735     - fix bug in metric terms of u-equation in LSR solver (implicit part),
736       changes verification/lab_sea
737     - rearrange implicit part of u-equation in LSR solver to make it easier to
738       read, understand, and debug. This causes changes at the truncation level.
739     - fix (serious) bug in the boundary conditions (sign error in the implicit
740       part) of the LSR solver. Changes all LSR results.
741     - fixed problem with HSNOW initialization to avoid thick snow when AREA
742       is initilized with small values - does not change lab_sea results.
743     - added HsnowFile initialization capability
744    o pkg/smooth: addition to model/src and pkg/ctrl so allow
745     initialization of pkg/smooth and application to control vector
746    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
747    o dependencies: pkg/profiles requires pkg/cal
748    o pkg/profiles:
749     - added option ALLOW_PROFILES_GENERICGRID
750         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
751         that interpolation information (grid points and coefficients) is provided
752         within the netcdf input files.
753         -> sample matlab scripts can be found in MITgcm_contrib/gael
754         that allow you to prepare netcdf input files.
755     - also modified: cleaner include statements, cleaner error print statements,
756       cleaner stops when error, and more tests of the netcdf input files consistency.
757    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
758    o pkg/seaice:
759     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
760       requires a new routine: seaice_diagnostics_fill.F
761     - make sure that seaice does not move if not forced (pressure replacement
762       method, Hibler and Ip, 1995), changes results
763     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
764     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
765       It is turned off by default (=-1.), because it changes the results.
766     - make it possible to read AREA from a file, too.
767    
768    checkpoint59c
769    o add S/R and diagnostics for oceanic mixed-layer depth
770    o move GMRedi call after all vertical mixing schemes (including KPP)
771    o pkg/thsice:
772     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
773      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
774    o pkg/obcs:
775     - bug fix for balance code
776    o pkg/seaice:
777      - allow values of SEAICE_elasticParm > 1
778      - add new parameter SEAICE_evpTauRelax as an alternative
779        to SEAICE_elasticParm
780      - make lsr boundary conditions free slip (by default), changes result
781      - add code for no slip boundary conditions for lsr
782      - set minimum of zeta to zero (and not 4e8) (changes results)
783      - add a cap on AREA after advecting AREA if seaice_growth is not called
784    o change calculation of Visbeck K:
785      - no longer depend on tapering scheme; instead, compute slope (limited
786        by GM_maxSlope). this is equivalent to what was comuted before with
787        clipping or linear tappering.
788      - fix vertical averaging (wrong by 1/2 level)
789      - leave the old version (but will not be maintained) within
790        #ifdef OLD_VISBECK_CALC / #endif
791      - update output of exp. ideal_2D_oce
792    o change error catch in calc_r_star to improve vectorization
793    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
794      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
795    o adjoint:
796      Re-organized adjoint checkpointing according to Matt Mazloff
797      (but with modifs/completions/cleanups)
798      Storing is now bundled into large arrays to optimized I/O
799      (and second step in cleanup of the_main_loop)
800    
801    checkpoint59b
802    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
803      - export/import (between ocean & coupler) fields needed for ocean DIC.
804    o pkg/seaice:
805      - get rid of three more exchanges seaice_calc_viscosities (required
806        different loop boundaries in seaice_lsr and seaice_ocean_stress)
807      - bug fix in seaice_ocean_stress (update of lab_sea required)
808      - reduce loop boundaries to necessary minimum also in seaice_evp
809      - go back to the old way of computing deltaC/Z as the adjoint likes that
810        better
811    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
812      passive tracer to an Age Tracer) + update output.txt
813    o pkg/exf:
814      - implement A-grid / C-grid selection for wind-stress input files.
815      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
816      for now, in exf_bulk_largeyeager04.F only :
817      - change implementation for case where windspeed + 2. components wind-stress
818        are read-in. AND use rhoConstFresh to convert evap.
819    o pkg/seaice:
820      - use correct EXCH_UV for wind-forcing (on A-grid).
821      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
822        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
823    o pkg/exf:
824      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
825      EXF_INTERPOLATION:
826      - merge global_with_exf/code version of exf_interp_read.F
827        to the main code ;
828      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
829        reading the file ; Important: This options needs to be defined to recover
830        previous code.
831        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
832      - no longer loose real*8 precision along the way when using exf_iprec=64.
833    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
834      - change discretisation of evp-solver in order to avoid another exchange
835        (changes lab_sea) and clean up a little
836      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
837        help the adjoint (this also changes the results slightly)
838      - add a few "_d 0" where they had been missing in seaice_evp.F
839      - cleaning up: remove unused seaice_calc_rhs.F
840    o pkg/exf: some cleaning-up:
841      - change various "constants" into runtime parameters
842      - cleaned-up Large&Yeager04 routine which should eventually
843        replace exf_bulkformulae.F (changed names of S/R and CPP)
844        and merged various ALLOW_ATM_WIND options
845     only used with thsice pkg (in thsice_get_exf.F):
846      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
847        which are used when useStabilityFct_overIce=TRUE (= the default)
848      - change default values of ice & snow emissivity and scale downward LW
849        by ice & snow emissivity.
850    o pkg/thsice:
851     fix few little problems, in thsice_calc_thickn.F:
852      - growth vertically (and not laterally) if iceFrac == iceMaskMax
853      - melt only laterally if hIce < hThinIce (as the comments say)
854      and in thsice_extend.F:
855      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
856      - start to form ice as soon as the minimum ice-volume is reachable.
857     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
858      and cpl_aim+ocn
859    o pkg/kpp
860     - move computation of surface related input fields to KPP into a new
861       subroutine kpp_forcing_surf.F
862     - remove wrong (within bi,bj loops) EXCH calls.
863     - little cleaning (add argument myThid in last position, cvs header ...)
864     - for now, fix conservation problem by exchanging KPPviscAz (may not
865       be the best fix)
866    o pkg/seaice
867     - check for inconsistent evp parameter/cpp-flag combination
868     - remove leftover errIO flat for obsolete name list error handling
869    o OpenAD
870     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
871    
872    checkpoint59a
873    o pkg/seaice: some parameter clarifications and a little bit of clean up
874    o pkg/thsice: rename run-time parameters:
875       himin       -> hIceMin
876       himin0      -> hThinIce
877       hihig       -> hThickIce
878       i0          -> i0swFrac
879       transCoef   -> bMeltCoef
880       frac_energy -> fracMelting
881      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
882       with default values (for now) that do not change the results.
883      remove old version of thsice vars advection in pkg/seaice.
884    o in FFIELDS.h:
885      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
886      - make pLoad & sIceLoad always available (but still only used if
887         ATMOSPHERIC_LOADING is #define).
888    o pkg/kpp: replaced _KPP_RL with _RL
889    o bug fixes for vertical diffusivity computations when both KPP and
890        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
891        are no longer updating the vertical diffusivity array
892        (passed as argument) but are (re-) setting those arrays.
893    o pkg/seaice: fix bug in evp solver, while doing that
894      - change (improve?) discretization of stress computations for both
895        cgrid-lsr and evp solver
896      - add a new routine to compute strain rates
897      - the above changes lab_sea results
898      - add no slip conditions for evp solver (off by default), lsr-version
899        may follow
900      - fix exchange for shear at Z-points (does not change lab_sea)
901      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
902        (to force the user to pick a time step since there is not "safe" way
903        of choosing it)
904      - add principal stress diagnostics
905      - rearrange fields for evp a little to avoid having to call a: too many
906        exchanges and b: exchanges for stress trensor components which we do
907        not have.
908      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
909        of evp, complete rewrite for lsr case (latter is does not yet work
910        in all cases)
911    o pkg/kpp: add code to have mixing in shelf ice caverns
912      - add myThid to all kpp routines (long overdue)
913    
914    checkpoint59
915    o pkg/exf:
916      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
917        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
918      - move exf header files from lower_case.h to UPPER_CASE.h ;
919        add missing cvs Header & Name
920      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
921      - add namelist param. selectStressGridPosition, exf_monFreq
922      - retire many _CLIM routines, and remove data.exf_clim
923        + params moved to data.exf
924        + climsst, climsss now handled by exf_set_gen, i.e.
925          climss?period=0 refers to constant field,
926          climss?period=-12 to monthly forcing
927      - split up namelists in data.exf
928    o pkg/seaice:
929      - remove seaice_exch and seaice_exch_uv
930      - remove superfluous exchange of theta
931      - add myThid to seaice_budget_ocean/ice
932      - add new interface for atmospheric wind forcing (C-grid only)
933        + new routine
934        + two new field (taux, tauy for stress over ice)
935        + removed one global field (DAIRN) for C-grid case only
936    o pkg/thsise
937      - 2nd set of modifs for thsice adjoint in conjunction with exf
938    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
939    
940    checkpoint58y_post
941    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
942      vertical diffusivity, similar to that in MOM4; turned on using
943      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
944      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
945    o Added capability for 3D specification of background vertical diffusion
946      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
947      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
948      "data" file that contains the 3D vertical diffusivity coefficients.
949    o ice dynamics (pkg/seaice) with thsice thermodynamics:
950      - add code within pkg thsice to advect & diffuse sea-ice fields
951      similar to (and will replace) what has been added in  seaice_advdiff.F,
952      but: - conserving Mass, Heat & Salt.
953           - better when using non-linear advection scheme (not yet fully tested)
954           - can also be used in atmospheric set-up (for now, only the diffusion).
955    
956    checkpoint58x_post
957    o IO option for global-file compact format:
958      - add options when generating topology (utils/exch2/matlab-topology-generator)
959      - add I/O capability (pkg/mdsio).
960      - adapt utils/matlab/rdmds.m to read this format.
961      for now long-line format not yet supported by pkg/mdsio (& exch2).
962    o shelfice: add a few diagnostics
963    
964    checkpoint58w_post
965    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
966      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
967      (and replace horiVertRatio in NH code).
968      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
969                         and tutorial_plume_on_slope (sensitive to truncation)
970    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
971      directly to drive seaice model (C-grid only)
972    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
973     - reintroduce computation of wind from stress,
974     - compute tau (in exf_bulkformulae.F) from windstress averaged to
975       mass points to avoid tau = 0
976     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
977    o rdmnc.m: make it work with "global" files created with gluemnc
978    o rdmnc.m : some improvements in dealing with singleton dimension
979      (tested on all testreport mnc output files).
980    o genmake2: disable pkg/profiles if netcdf test fails.
981    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
982    o move call to cal_readparms up to make calendar parameters/variable available
983      to all packages
984    
985    checkpoint58v_post
986    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
987      useDynP_inEos_Zc tested.
988    o pkg/exf: changes to properly interpolate/mask/scale initial fields
989    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
990      and portions thereof.  See read_cs.txt for description and examples.
991    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
992      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
993      following the great-circle arc between those 2 points.
994    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
995      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
996    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
997     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
998     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
999     - still needs work (not working with some options ; efficiency to improve)
1000       and serious testing.
1001     - use this scheme for temperature & salinity in 2 advection test exp.:
1002       advect_xy & advect_xz, respectively.
1003    
1004    checkpoint58u_post
1005    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
1006    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
1007    o testreport: add option "-skipdir" to skip some test.
1008    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
1009      momentum calculation.
1010    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
1011    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
1012      remove checkpoint.F and the_correction_step.F (no longer used);
1013      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
1014    o add option (linFSConserveTr) to correct for tracer source/sink due to
1015      Linear Free surface
1016    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
1017    o pkg/thsice: fix reading mnc-pickups
1018    
1019    checkpoint58t_post
1020    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
1021    o pkg/mdsio:
1022     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
1023       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
1024       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
1025     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
1026     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
1027       either MDS_READ_FIELD or MDS_WRITE_FIELD )
1028     - new S/R (to replace MDSWRITEMETA), which allows to write more
1029       informations (variable names, time ...) to meta files.
1030     - modify rdmds.m to give back the meta file content.
1031    o pkg/diagnostics: change vertical interpolation to be safer, and more
1032       flexible (define p-levels to interpolate to in data.diagnostics);
1033      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
1034       diagnostic pointer.
1035    o pkg/seaice: more cleaning up of seaice_growth, added many comments
1036    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
1037    o fix multi-category seaice:
1038     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
1039       SEAICE_MULTICATEGORY
1040     - fix short wave heat flux
1041    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
1042       and allow to use EVP solver. Change forward lab_sea: test both EVP
1043       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
1044    o Initial check-in of lab_sea adjoint
1045      (very similar to natl_box_adjoint/code_seaice)
1046      * used C-grid and EVP solver
1047      * used KPP, GM/Redi
1048      * uses inAdExact=.TRUE.
1049      * gradient checks fail for both ADM and TLM
1050        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
1051        f.d. gradients actually seem more problematic than ADM, TLM gradients;
1052        issue is related to forward mismatch between g77 an ifort
1053    o pkg/seaice: overhaul of thermodynamics
1054     - growth.F and groatb.F are replaced by new routine seaice_growth.F
1055     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
1056     - move a few global fields out of SEAICE.h into seaice_growth.F and
1057       make them 2D (FICE/QNETO/ ...)
1058     - remove FO (it is the same as QNETO)
1059     - introduce a few local fields to avoid modifying external fields such
1060       as atemp, etc.
1061    
1062    checkpoint58s_post
1063    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
1064      changed exf_set_gen.F so that
1065        genperiod=0 means input file is one time-constant field and
1066        genperiod=-12 means input file contains 12 monthly means
1067    o CG2D: use pre-computed solver main-diagonal (stored in common block);
1068      this affects truncation error ; generate new output file for exp. which
1069      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
1070        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
1071        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
1072        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
1073        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
1074        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
1075    o start implementation of deep-atmosphere and anelastic formulation
1076    o verification: remove 2nd copy of input files and use script "prepare_run"
1077      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
1078    o mom_common/vecinv/fluxform: fix a few initialisation isssues
1079    o profiles: fix for multithreaded case
1080    
1081    o diagnostics: rename few diags:
1082      s/'PRESSURE'/'RCENTER '/g
1083      s/'TICE    '/'oceFreez'/g
1084      s/'TAUX    '/'oceTAUX '/g
1085      s/'TAUY    '/'oceTAUY '/g
1086      s/'SWFLUX  '/'oceQsw  '/g
1087      s/DIFx/DFxE/g
1088      s/DIFy/DFyE/g
1089      and add few ocean-forcing diagnostics:
1090      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
1091    o modifications to pkg/seaice/growth.F and budget.F, which change results of
1092      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
1093      as actual snow thickness.  It now refers everywhere to effective snow
1094      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
1095    
1096    checkpoint58r_post
1097    o modifications to pkg/seaice/growth.F, which change results of
1098      lab_sea experiment: fixes pertain to melting snow over open water, to
1099      masking EVAP under sea ice, and to using the correct AREA variable for
1100      computations of EVAP, PRECIP, HSNOW, and GHEFF
1101    o add ability to read bathy, salt, and theta using MNC (off by def)
1102    o add flooding algorithm and advection of HSNOW for pkg/seaice;
1103      both are turned off by default and do no change any results
1104    o seaice advection with pkg/thsice: a step toward the use of non-linear
1105      advection scheme, but #ifdef or commented out for now (requires more EXCH).
1106    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
1107      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
1108      in natl_box (affects results @ truncation level: update output.txt)
1109    o multi-threading and IO:
1110      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
1111      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
1112        (needed to work with SingleCpuIO): tested in all verif. exp.
1113    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
1114      affects the results (but none of the verification test uses this scheme).
1115    o Adding some pkg/diagnostics capability to pkg/seaice
1116      (will certainly be subject to changes)
1117    o ctrl: adding new control variables:
1118      lwflux, lwdown, evap, snowprecip, apressure, runoff
1119    
1120    checkpoint58q_post
1121    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
1122      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
1123      high_res_cube configuration by 4% on Columbia.
1124    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
1125      add (in global_with_exf/code) a version of EXF_INTERP_READ without
1126      dynamical allocation (seems to work in multi-threaded).
1127    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
1128      single CPU io) so that TAF does not have to see EESUPPORT.h
1129    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
1130    
1131    checkpoint58p_post
1132    o obcs: stop if obcs is used with useCDscheme = .true.
1133    o shelfice:
1134     - fix a sign error so that no slip at shelfice interface works
1135     - remove stop for combination non-hydrostatic code and shelfice. That does
1136       not mean, that the results are correct, but at least they are numerically
1137       stable
1138    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
1139    o added adjoint exch routined for all exch*3d* routines
1140      and updated flow directives
1141    
1142    checkpoint58o_post
1143    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
1144      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
1145    o change controling S/R for writing pickup file (new S/R do_write_pickup)
1146      and clean-up reading/writing of pickup files.
1147    o fix local version of read/write pickup (NH part) in rotating_tank/code
1148    o simplify EXCH interface:
1149     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
1150     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
1151    o added the regrid package
1152    o shelfice:
1153     - add a simple boundary layer scheme to reduce noise
1154     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
1155    
1156    checkpoint58n_post
1157    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
1158       local variable (not in common block).
1159    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
1160      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
1161      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
1162        to work with SingleCpuIO.
1163    o add "_d 0" to real constant of pkg/cfc subroutines ;
1164       update exp. cfc_exemple & tutorial_cfc_offline output files.
1165    o multi-threading and IO:
1166      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
1167        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
1168      - barrier before and after reading.
1169      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
1170      - avoid using MDS_WRITELOCAL for LAND pkg output.
1171      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
1172        common-block variables ; Allows multi-threading with master-thread IO.
1173    o change default MAX_NO_THREADS from 32 to 4 ;
1174      and stop cleanly when MAX_NO_THREADS is too small.
1175    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
1176    
1177    checkpoint58m_post
1178    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
1179       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
1180    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
1181       keep global_ocean.90x40x15 (for AD testing) with former secondary test
1182       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
1183    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
1184        add MITgcm_tutorials (= code + all the tutorials)
1185    o ecco, option to compute cost for total ssh (mean+anom)
1186    o consistent with addition of ptracer and ssh in pkg/profiles
1187    o profiles: adding ptracer and ssh
1188    o testreport: change multi-test output-file name
1189      (from output.txt.{name} to output.{name}.txt)
1190    o profiles: now ok for mutli-tiles case
1191    o seaice: add 4 parameters for different advection schemes for area,
1192      (effective) seaice thickness, enthalphy, and snow height. Their default
1193      is the standard parameter SEAICEadvScheme
1194    o calc_gw:
1195     - add cosFacU in zonal viscous flux (harmonic.visc.).
1196     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
1197       of tutorial_plume_on_slope.
1198    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
1199    o calc_gw: true flux-form, account for horizontal grid spacing.
1200      update rotating_tank results, but not plume_on_slope (affected at
1201      truncation level, 11 digits).
1202    
1203    checkpoint58l_post
1204    o calc_gw:
1205     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
1206     - remove side-drag for now (need to fix it); update plume_on_slope results.
1207     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
1208    o commit code to make SST/SSS weights spatially variable
1209      (based on either variable in-situ or variable initial T/S weights)
1210    o pkg/ecco:
1211      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
1212        now based on horizontally varying weights wthetaLev, wsaltLev
1213      * cost_averagesflags now returns year indices in addition to day, month
1214      * sflux balance is performed on annual basis
1215        (sflxumm, sfluxmm2, bal_sfluxmm)
1216      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
1217        including separate counting and multipliers
1218    o pkg/rbcs
1219      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
1220    
1221    checkpoint58k_post
1222    o testreport:
1223     - always build in dir. "build" (if not there, mkdir build instead of building
1224       & running in input)
1225     - run in dir run (if it exists), in build otherwise.
1226     - call prepare_run (if input/prepare_run exists)
1227     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
1228    o pkg/exf modifications to interpolation and rotation routines for more
1229       reasonable treatment of North Pole singularity: for tracers North Pole
1230       value is set to northernmost zonal-mean value, for zonal velocity it is
1231       set to zero, and for meridional velocity it is set to northernmost value.
1232    o pkg/exf/exf_check_range.F
1233     - add tile index to diagnostics and move stop statement to the very
1234       end of the routine.
1235    o pkg/diagnostics: (diagnostics_main_init.F)
1236      define title of isomorphic variables according to the current config.
1237    o pkg/thsice with pkg/seaice dynamics:
1238    - fix domain of computation (interior only, required for exf) and do exchanges
1239    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
1240    o towards a standard way of dealing with multi-threading in MONITOR
1241      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
1242    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
1243       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
1244    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
1245    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
1246    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
1247       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
1248    o tracer advection:
1249     - clean-up and simplify calc_common_factors.F
1250     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
1251       advection subroutine (but still not used within DST advection S/R)
1252    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
1253    
1254    checkpoint58j_post
1255    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
1256      from file (collects calls previously in FORWARD_STEP)
1257    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
1258    o adjoint store dir. adjusted accordingly
1259    o genmake2
1260      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
1261    
1262    checkpoint58i_post
1263    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
1264      on wind stress (SEAICEstressFactor defaults to 1.)
1265    o Total number of Timers is finite (<=40): comment out 2 non-essential one
1266      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
1267    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
1268      on CS-grid: no longer loosing mass.
1269    o exf & curvilinear-grid: no longer modify longitude xC & xG.
1270    o pkg/ggl90: fix sloppy output and fix a bug
1271    o pkg/seaice: added SEAICEuseEVPpickup parameter
1272      - Set to false in order to start EVP solver with
1273        non-EVP pickup files when using SEAICEuseEVP
1274      - fix sign error in diffusion in seaice_calc_rhs
1275    
1276    checkpoint58h_post
1277    * Modifications for bottom topography control
1278      o replace hFacC by _hFacC at various places
1279      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
1280      o add non-self-adjoint cg2d_nsa
1281      o update autodiff support routines
1282      o re-initialise hfac after ctrl_depth_ini
1283      o works for 5x5 box, doesnt work for global_ocean.90x40x15
1284    * Adding verification for 5x5 box (4-layer) bottom topography control
1285    
1286    checkpoint58g_post
1287    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
1288       used for mean seasonal cycle, mean diurnal cycle); add an example
1289       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
1290    o pkg/ggl90:
1291      - add parameter (minimum surface kinetic energy)
1292      - fix bug (avoiding division by zero)
1293    o couple pkg/thsice to pkg/seaice:
1294      - modify advection in seaice to accomodate new scalar fields to be advected
1295      - only muliDimAdection scheme work with seaice/thsice
1296      - mapping of thsice-variables to seaice-variables, back and forth
1297      - does not break the verification experiments, but does not give the
1298        desired results either
1299    o pkg/seaice
1300      - make (default) second order advection a bit less confusing?
1301    
1302    checkpoint58f_post
1303    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
1304      to pkg/seaice):
1305      - new routines thsice_map_exf and thsice_get_exf provide the interface
1306      - add an additional formal parameter to thsice_solve4temp
1307    o pkg/exf:
1308      - add new fields wspeed, snowprecip (to be able to couple to thsice)
1309      - correct Stefan-Boltzmann constant
1310      - new parameter for longwave surface emittance
1311      - separate some stuff from exf_bulkformulae into new routines  
1312        exf_radiation, exf_wind
1313      - add new parameters and constants: longwave emissivity for ocean, ice
1314        and snow, evaporation parameters over ice
1315      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
1316        either wind from stress or stress from wind
1317    o pkg/thSIce:
1318    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
1319    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
1320       and THSICE_CALC_THICKN
1321    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
1322    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
1323      to make debugging easier.
1324    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
1325    o pkg/bulk_force:
1326      - clean-up comments and parameters ;
1327      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
1328    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
1329      generate new output for test-experiment: aim.5l_cs.thSI
1330    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
1331      testreport accordingly
1332    
1333    checkpoint58e_post
1334    o SEAICE_CGRID adjoint done
1335    o R_STAR adjoint implemented.
1336      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
1337      * need to sort out init. of h0facc, etc.
1338    o Make pkg/profile fully independent of ecco,cost, etc. stuff
1339      to be able to use it in pure forward.
1340    
1341    checkpoint58d_post
1342    o upgrade simple test-experiment to tutorial example:
1343     step.1: duplicate the experiment and (step.2) will remove the old copy.
1344      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
1345      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
1346      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
1347      tutorial_global_oce_biogeo    <- copy of dic_example
1348      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
1349      tutorial_plume_on_slope       <- copy of plume_on_slope
1350      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
1351      tutorial_global_oce_optim     <- empty for now (David ?)
1352      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
1353     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
1354    o correct a sign problem in cost_scat.F
1355    o obcs and ptracers: fix boundary conditions for advections schemes
1356      with larger stencil
1357    o thsice adjoint: start
1358    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
1359      completeness
1360    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
1361      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
1362    o ptracers adjoint:
1363      * avoid extensive recomputatations
1364      * fix missing re-init. of gptr (missed by TAF)
1365    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
1366      me to turn off the excessive output to STDOUT that this package produces
1367    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
1368      and add those terms in Vector-Invariant formulation.
1369    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
1370      if the control period (xx_hfluxperiod etc) is 0
1371    o in profiles pkg, clean routines and fix details
1372    o in ecco pkg, reading ssh data:
1373      fix problem in case the model does not start at iter0=0
1374    o fix mnc-pickup/restart for ptracers
1375    o new package prifiles:
1376      code to compute profile-based cost by Gael Forget
1377      (modifs in ecco, ctrl, autodiff)
1378    o Benign bug fix in initialization (spotted by M. Mazloff) of
1379      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
1380    
1381    checkpoint58c_post
1382    o adjoint: finish NLFS adjoint and provide reference output in
1383      verification/global_ocean.90x40x15/results_ad_nlfs
1384    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
1385      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
1386      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
1387      with SEAICE_CGRID defined.
1388    o move calendarDumps from "data" to "data.cal" and clean-up the code
1389      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
1390    o add useEXF & useCAL flags (for now, set in hard-coded way)
1391    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
1392      (were missing in NH mode, and wrong in quasihydrostatic mode).
1393      waiting for Chris updated version of calc_gw to add those CALLs.
1394    o fix bug in quasihydrostatic S/R ;
1395      add a test for this option: global_ocean.90x40x15.qshyd
1396    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
1397      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
1398    o add on/off flag useOffLine for package OFFLINE
1399    o seaice:
1400      - modify advection so that it works also on the C-grid
1401      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
1402        problem in multi-tile runs with C-grid
1403      - add flags for clipping ice velocities and/or masking solver forcing
1404      - fix drag (ocean on ice) formulation and a bug that caused noise in the
1405        C-grid solver
1406      - added a few comments to seaice_diffusion.F
1407      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
1408        are now exclusive)
1409      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
1410        required re-ordering the code a little:
1411       + make DAIRN global variable (defined in SEAICE)
1412       + move computation of the viscosities eta and zeta into a new separate
1413         routine (because I need to recompute them in seaice_ocean_stress.F)
1414    
1415    checkpoint58b_post
1416    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
1417      update output.txt of exp. aim.5l_cs.thSI
1418    o various mnc cleanups and improvements:
1419      + shrink lookup tables by factor of ~4
1420      + better error reporting when running out of lookup space
1421      + able to handle longer path/file names (up to 500 chars)
1422    o adjoint:
1423      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
1424      - TBD: "hidden" mom_vecinv recomp. in dynamics
1425    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
1426     (allow to differentiate between forcing components using new integer flags:
1427      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
1428     and add new flag to put Dissipation tendency out of Adams-Bashforth.
1429    o ecco
1430      - enable trend removal from SSH anomaly obs.
1431    o adjoint
1432      - a fix for PmEpR when #undef EXACT_CONSERV
1433      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
1434      - try to fix "hidden" recomp. in forward_step for NLFS
1435        (NLFS seems broken sometimes after I checked it in)
1436    o seaice:
1437     - add c-grid version of the dynamic solver:
1438       + three new routines that are the c-grid substitute lsr, dynsolver
1439         and ostres
1440       + put a few fields that were local to dynsolver into global common
1441         blocks, so that I can move the computation of stresses etc into
1442         seaice_lsr (saves coding but may break the adjoint).
1443     - replace more hardwired parameters by runtime parameters
1444     - add ice masks that mask the rhs of the implicit solvers where there
1445       is no ice (commented out in seaice_dynsolver, because i am not sure
1446       if this works properly), eventually this should replace the clipping
1447       of ice velocities in seaice_dynsolver to +/-40cm/s.
1448    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
1449      include it only where its needed
1450    o move balancing of fluxes before the call of external_forcing_surf
1451    o seaice:
1452      - correct units of turning angles (now they are really in degrees)
1453      - move computation of GWATX/Y out of main routine into dynsolver
1454      - initialize GWATX/Y in seaice_init
1455    o Apply mask on Fresh-Water flux (needed for SSH forcing).
1456      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
1457    o seaice: add runtime flags for turning angles (default to zero)
1458    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
1459      and trend from exf forcing and ctrl control adjustments
1460    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
1461      (since checkpoint57x_post)
1462    o change the default rotation period to 86164.s = the Earth rotation
1463    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
1464      and based on a reference stratification. Tested within hs94.cs-32x32x5.
1465    o seaice advection: add code for choosing between the default (2nd order
1466      central differences) and multiDim advection schemes provided by
1467      pkg/generic_advdiff
1468    o seaice:
1469      - removed all references to SEAICE_GRID.h fields from
1470        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
1471        (cubed-sphere configuration will change a little)
1472      - grid computations in seaice_init are obsolete now.
1473      - cleaned up code a little so that is easier to read (hopefully).
1474      - added new (better?) discretizations of default advection and diffusion
1475        (turn on with SEAICEuseFluxForm)
1476      - replace 1 in 3d global fields by kSurface in growth.F
1477      
1478    checkpoint58a_post
1479    o seaice:
1480      - bug fix in advect.F
1481    o shelfice:
1482      - separate shelfice load anomaly from pload (breaks with time
1483        dependent forcing), => introduce constant field shelficeLoadAnomaly.
1484        Its default is 0., but it may be computed more cleverly from (unknown)
1485        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
1486        done offline. A good approximation of the pressure load anomaly is
1487        necessary to avoid large initial adjustment processes underneath
1488        deep-reaching shelfice.
1489      - small fix in ISOMIP shelfice_thermodynamics
1490      - add more sophisticated thermodynamics of Hellmer (1989), this is
1491        now the default
1492      - give a few constants more intuitive names
1493    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
1494      if bulk formulae are used in long integration (especially EmPmR). Turn
1495      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
1496      if balancePrintMean, the imbalance that is substracted is printed to
1497      STDOUT.
1498    o fix bug (typo) in obcs_apply_eta.F
1499    o add a new package shelfice which enables us to model the circulation
1500      underneath shelf-ice with draughts of hundreds of meters.
1501     - works
1502     - to do: + include improved thermodynamics
1503              + check whether kSurfC (from model/inc/SURFACE.h) can be used
1504                instead of new field kTopC
1505              + can we use topoFile, Ro_surf and existing code in ini_depth.F
1506                instead of new field R_shelfIce and new code in ini_depth.F
1507                and ini_mask_etc.F?
1508              + adjust vertical mixing schemes?
1509    o seaice pkg:
1510     - add a cpp-flag to include a simple formula for a salinity dependent
1511       freezing point of sea water at the surface
1512     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
1513       meridional stresses are now different (and hopefully correct)
1514    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
1515       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
1516       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
1517    o pkg/diagnostics: add options and parameters for regional-statistics
1518       diagnostics ; define regions by reading a region-mask from a file
1519       (might add other options later)
1520    o pkg/bulk_force:
1521     - add option and parameters to use AIM surface-flux formulae.
1522     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
1523       others forcing fields (defined in PARM05, parameter file "data") are loaded
1524       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
1525     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
1526     - use the right EXCH call for uwind,vwind (to work on CS-grid).
1527     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
1528       and parameters (note: calcWindStress replaces .NOT.readwindstress).
1529     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
1530    
1531    checkpoint58
1532    o add "--embed-source" option to genmake2 which, when the supporting
1533      tools can be compiled (as determined by genmake2) will turn on the
1534      embed_files package which then embeds the entire MITgcm source code
1535      (*.[fFhc] + Makefile) used for the build within the executable
1536      - requested by CNH but off by default
1537      - adds a paltry <9MB to the mitgcmuv executable in most cases
1538      - only writes the output when useEMBEDSRC in eedata is true
1539    o clean up 3-dim. relaxation codes:
1540      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
1541      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
1542      * Thanks to Tom Haine for testing!
1543    
1544    checkpoint57z_post
1545    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
1546      affects output (@ truncation level) of exp. plume_on_slope ; updated.
1547    o fix the pickup behavior for obcs in combination with ptracers
1548    o fix a bug in ptracers_external_fields_load
1549    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
1550      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
1551    o transfered surface NH pressure to eta field (if exactConserv).
1552    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
1553         and update lab_sea output.txt file.
1554    o completing 3-dim. relaxation code: additional term
1555         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
1556      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
1557      * At compile time, in "EXF_OPTIONS.h" set
1558          #define  ALLOW_CLIMTEMP_RELAXATION
1559          #define  ALLOW_CLIMSALT_RELAXATION
1560      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
1561          tauThetaClimRelax3Dim = 15552000.0,
1562          tauSaltClimRelax3Dim  = 15552000.0,
1563      * 3 cases:
1564          1) Use a constant-in-time 3-dim. field
1565          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
1566          3) Real-time relax. to time-evolving prescribed field
1567    o Adding Laplacian-type smoothness constraint on
1568      initial and boundary (forcing) controls (ic, bc)
1569      * enable at compile-time via
1570        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
1571      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
1572      * Absolute scale somewhat unclear so far
1573      * no area weighting was included since no other cost term does so far
1574    
1575    checkpoint57y_post
1576    First step for a NLFS adjoint
1577    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
1578    o new init. routines for calc_r_star, calc_surf_dr
1579    o still need to deal with ini_masks_etc
1580    o testreport seemed happy
1581    checkpoint57y_pre
1582    
1583    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
1584    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
1585    o add new offset feature to offline pkg (plus minor cleanup)
1586    o cfc fixes for final year of integration
1587    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
1588      be in GCHEM_OPTIONS).
1589    
1590    checkpoint57x_post
1591    o fix testreport Pb in multiple test experiment.
1592    o cleanup our namelist syntax in verification:
1593      - make it more F95 standards compliant (some work still needed)
1594      - allows the vast majority of our tests to work with gfortran
1595    o Non-Hydrostatic:
1596     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
1597     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
1598    o Allow to apply AB on T,S rather than on AB(gT,gS):
1599     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
1600     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
1601       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
1602     - need a "clever" read_pickup to restart from the other AB formulation
1603    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
1604    o remove some unused variables (reduces number of compiler warnings)
1605    o adjoint
1606      * Disable useVariableViscosity for adjoint for time being
1607        (there are a number of extensive recomputations)
1608      * Initialize certain variables needed for adjoint
1609    
1610    checkpoint57w_post
1611    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
1612                 fix the singleCpuIO RS version of MDSWRITEFIELD
1613       and add a WARNING if using globalFiles=T with multi-processors.
1614    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
1615      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
1616    o tracer advection scheme:
1617      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
1618       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
1619       was not very convenient).
1620      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
1621       (further tests needed for the implicit DST & Flux-Limiter schemes).
1622    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
1623      and sRef for convenience, handy, when you want to initialize
1624      ptracers in a large domain with a constant non-zero value. Also,
1625      untangle ptracers_init.F a little.
1626    
1627    checkpoint57v_post
1628    o change dome exp. to use variable viscosity in side-drag terms.
1629    o remove all the files from the cfc_offline test since they are now
1630      incorporated into tutorial_cfc_offline which has been producing
1631      identical results for a few days of testing
1632    o add new parameter: sideDragFactor to enable half-slip-side BC
1633      and change side-drag S/R to use viscosity from mom_calc_visc
1634      (can switch back by setting sideDragFactor=0.); affects results at
1635      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
1636       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
1637    o vorticity & strain are now computed without masking, to account for
1638      no-slip-side BC in variable viscosity calculation ; mask is applied
1639      anyway later on, before computing advection/coriolis terms.
1640    o modify exp4 to test new obcs support for reading from external files
1641      and for passive tracers
1642    o fix behavior of ptracers_monitor when monitor output is written to a
1643      netcdf-file; still not independent of monitor.F (writes in the same
1644      file).
1645    o change default value of tRef (put a uniform, meaningful value for ocean
1646      & atmos) and initialize sRef (was missing, as Martin mentioned).
1647    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
1648      to be proportional to enstrophy dissipation length.  Thus,
1649       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
1650      This is now consistent with Smagorinsky and with the manual.
1651    
1652    checkpoint57u_post
1653    o OBCS and PTRACERS: add open boundary support for passive tracers
1654      - either use homogenous (pseudo) v.Neumann conditions or prescribe
1655        OB-values from file; this is not different from the way theta and salinity
1656        are treated
1657      - however, Orlanski-radiation conditions are not supported, and the model
1658        will stop if you use pTracers and Orlanski at the same time.
1659      - beefed up the rountine obcs_external_fields_load: now only those open
1660        boundary values are overwritten with values from files for which there
1661        are really files, otherwise the OB-fields remain untouched. This makes
1662        it possible to use different OBs at different ends of the domain (as
1663        with EXF)
1664    o reduce number of exch calls in shap_filt (s2).
1665    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
1666      truncation level) 4/5 MLAdjust test results (11&12 digits match).
1667    
1668    checkpoint57t_post
1669    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
1670    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
1671      same truncation, independent of the face number: affects affects several
1672      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
1673    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
1674      note that biharmonic viscosity + no-slip was not tested in any experiment.
1675    o fix bug in non-linear free-surf side-drag ; generate new output for
1676      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
1677    o make mnc honor the writeBinaryPrec flag for most kinds of output
1678    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
1679    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
1680      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
1681    o add brackets in multi-terms sum to get same truncation, independent of
1682      the face number (manage to get exactly same value of gU,gV at the cs-edge)
1683      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
1684    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
1685      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
1686      a maximum grid-scale Reynolds number.  Also, changes all length calculations
1687      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
1688      Suggested values of viscosity parameters found in mom_calc_visc.
1689      Many new viscosity diagnostics available.
1690    
1691    checkpoint57s_post
1692    o Add clearing-house for viscosity calculations, mom_calc_visc and
1693      correct numerous bugs in LeithD and Smagorinsky discretizations.  
1694      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
1695      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
1696      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
1697      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
1698      The Strain-Tension form is now called with useStrainTensonVisc=.true.
1699      ViscAhStrain and viscAhTension are now retired.
1700    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
1701    o In response to JMC's bug report, genmake2 now ignores any soft-links
1702      that it finds in the *current* directory when searching for files.
1703      Soft-links found in any other source directories will still work as
1704      they did before.
1705    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
1706      a C routine to unlimit the stack size
1707    o mnc-ify pkg/aim snapshot vars
1708    o mnc-ify pkg/land as requested by Daniel
1709    o various changes to mnc including:
1710      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
1711      - output can now be grouped so that all files within a group
1712          change the ITER portion of their names in lock-step together
1713      - can now read ("global") PER-FACE (in addition to PER-TILE) files
1714          and works with both EXCH1 and EXCH2 (but needs more testing)
1715      - writing works for all verification test cases w/ g77 on Linux
1716    
1717    checkpoint57r_post
1718    o make MNC variable initialization happen earlier
1719    o add diagnostics for (almost) each term of the momentum Eq.
1720    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
1721    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
1722    o remove MINIMAL_TAVE_OUTPUT option ;
1723      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
1724    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
1725      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
1726    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
1727    o add time-dependent SST, SSS control
1728    o cost terms in ecco/ modularized (new cost_generic.F)
1729    o cost_averages routines are modularized (new cost_averagesgeneric.F)
1730    o new infrastructure for seaice model vs. obs misfits in seaice/
1731      * driver from the_main_loop.F is seaice_cost_driver.F
1732      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
1733      * gradient check in Exp. 6a of natl_box_adjoint/
1734    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
1735      (see README file)
1736    
1737    checkpoint57q_post
1738    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
1739    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
1740      - bug was reported by Jean-Michel and Ian Fenty
1741    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
1742      update exp. cpl_aim+ocn output.
1743    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
1744      Needed for high-res. runs with large global files
1745      to be able to limit tapelev size
1746    o Changed some tests for adjoint:
1747      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
1748      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
1749      * global_ocean.90x40x15/ back to default 3-level checkpointing
1750    o Modifications to enable scripted COMMON to MODULE conversion
1751      * verification/OpenAD/code/ has necessary scripts and description;
1752      * converts, compiles and runs successfully;
1753    
1754    checkpoint57p_post
1755    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
1756    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
1757      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
1758    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
1759    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
1760      (was already the case for dissipation with mom_vecinv,
1761       and also the case for grad.PhiHyd when staggered-timeStep)
1762      This will allow to put dissipation out-off the AB time-stepping.
1763     Unfortunately, affects truncation error. Update output of exp. that "fails"
1764      (cg2d matching number) and leave the others for later: front_relax(10),
1765      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
1766      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
1767    
1768    checkpoint57o_post
1769    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
1770      (2) its ready to be documented during the 20050801 DocFest
1771    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
1772      for ideal_2D_oce and lab_sea on linux_ia32_g77
1773    o set to #undef CTRL_SET_OLD_MAXCVARS_30
1774      in global1x1_tot/code_seaice_adj to access indices 32, 33
1775      (worth another tag)
1776    
1777    checkpoint57n_post
1778    o adding precip control xx_precip 32
1779    o adding swflux control xx_swflux 33
1780    o Replacing 10 forcing penalty cost routines by 1 generic.
1781    o Implementing partitioning in time-mean and variable adjustment
1782      for atmos. state.
1783    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
1784    o in natl_box_adjoint:
1785      * updated exp 1 to 10
1786        (but does not have time-mean vs. variable split results yet)
1787    o updated global1x1/*_seaice_adj/
1788      to incorporate latest changes
1789    o enable useSingleCpuIO for mdsio vector routines
1790      (applies in particular to tapelev I/O)
1791    o removed inefficient K-loop in all active_file*control*.F
1792    
1793    checkpoint57m_post
1794    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
1795      and advect_cs (use EXCH-2 and standard cs-32 grid files).
1796    o pkg/exch2: filling of face-corner halo regions is optional
1797      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
1798    
1799    checkpoint57l_post
1800     tag before updating tutorials (pre-release-2)
1801    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
1802       for output and interpolation of input fields onto model grid)
1803    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
1804       Affects results of exp. rotating_tank ; update output.txt.
1805    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
1806          and taking the square quantity and/or using a fraction-weight field.
1807    o fix aim_diagnostics_init.F mate numbers.
1808    o add mnc output capability to diagnostics/diagstat and update
1809      our cvsignore files for the ACSII output generated
1810    
1811    checkpoint57k_post
1812    o lab_sea now uses diagnostics package and provides a suite of
1813      new EXF diagnostics output.
1814    
1815    checkpoint57j_post
1816    o exf
1817      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
1818        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
1819        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
1820      * extended diagnostics output
1821        - now includes all EXF variables
1822        - hs, hl moved to common block
1823        - separate S/R for diagnostics, called after ctrl vector is added
1824        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
1825        - EXFqnet contains true Qnet (i.e. includes qsw)
1826      * updated verif. lab_sea, global_with_exf
1827      * Rearranging hflux (exf_mapfields -> exf_getforcing)
1828        to ensure that diagnostics sees a true EXFqnet
1829    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
1830    o diagnostics pkg: change pointers so that 1 diagnostic can be used
1831      several times with different frequencies.
1832    o mnc-ify the thsice package as requested by Daniel Enderton
1833      - the monitor--MNC output needs work
1834      - many attributes need to be added (most are currently blank)
1835    o mnc-ify theaim_v23 package as requested by Daniel Enderton
1836      - many attributes need to be added (most are currently blank)
1837    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
1838    o add Sadourny like discretization to the 4th.O vorticity advection scheme
1839    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
1840      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
1841         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
1842    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
1843     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
1844    
1845    checkpoint57i_post
1846    o Diagnostics package was changed: diagnostic allocation is now deactivated
1847      by setting an empty file name in the namelist (used to be by setting 0 frequency)
1848    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
1849      add 1rst Order upwind vertical Shear.
1850    o add a quick fix for A/B checkpointing in OFFLINE mode
1851    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
1852      end-run around the C/Fortran linking horror in eesup/src/timers.F
1853    o added pkg/runclock: allows user to terminate run based on wall clock
1854    o added non-hydrostatic scaling parameter: nh_am2
1855    o pkg/my82: futile attempt to make results compiler-independent by adding
1856      some "_d 0", etc. no effect.
1857    o for mnc output, fill the 'T' coordinate var with myTime and create a
1858      separate 'iter' variable for iteration count
1859    o pkg/diagnostics:
1860      add new capability: output of Global/Regional & per-level statistics ;
1861      tested against monitor output (including land & thSIce) on various exp.
1862    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
1863    
1864    checkpoint57h_done
1865      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
1866      data.diagnostics, data.gchem, data.ptracers) is done.
1867    
1868    o pkg/diagnostics: prepare for Global/Regional statistics.
1869      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
1870    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
1871      and rename it: DIFFERENT_MULTIPLE
1872    
1873    checkpoint57h_post
1874    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
1875    o pkg/diagnostics: change output frequency, now in seconds (instead
1876      of Nb of iterations). This requires to change data.diagnostics.
1877    checkpoint57h_pre
1878    
1879    o in mnc, let the user create the output dir if both mnc_outdir_date
1880      and mnc_outdir_num are false
1881    o add fflags() to pkg/diagnostics which allows one to specify, on a
1882      per-file basis, the file precision [default behavior is unchanged]
1883    o added diagnostics to pkg/kpp, including computation of mixed layer
1884      depth based on a temperature/density criterion
1885    o updated verification/natl_box to test the new pkg/kpp diagnostics
1886    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
1887    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
1888    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
1889      not mnc -- this mistake was found by JMC and is now corrected
1890    
1891    checkpoint57g_post
1892    o add Adams-Bashforth 3rd Order time stepping:
1893      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
1894      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
1895    checkpoint57g_pre
1896    
1897    o make lambda[Theta,Salt]ClimRelax spatially varying
1898      (default remains spatially uniform constant based on tau)
1899    o added new control variables
1900      * init. uVel, vVel, etanN
1901      * lambda[Theta,Salt]ClimRelax
1902    o separate masks used for ctrl_pack/unpack 'from write_grid' output
1903      (suggested by G. Forget)
1904    
1905    checkpoint57f_post
1906    o add parameter "baseTime" = model base time = time at iteration zero
1907      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
1908      account for baseTime shift
1909    o move Coriolis arrays from PARAMS.h to GRID.h
1910    checkpoint57f_pre
1911    
1912    o mnc-ifying the seaice package
1913    o introduced an alternative length scale calculation for use in the limiting
1914      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
1915    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
1916    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
1917      as well as grad(vort3).  Made it compatible with both approximate form
1918      for the cubed sphere and full form of these gradients.  Added flag
1919      useFullLeith to select between approximate and full form.  
1920    o add "d0" in getcon.F to reduce differences between compilers/platforms
1921      update output.txt of exp. fizhi-gridalt-hs
1922    o change port_rand funtion to allow to set the seed.
1923    o fix obscure MNC bug involving conversion between reals and integers
1924      - it caused no problems with certain (eg. gcc, ifc) compilers but the
1925        new version is now more standards-compliant
1926    o adjoint-related modifications
1927      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
1928      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
1929      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
1930    
1931    checkpoint57e_post
1932    o Adding eddy stress controls a la Ferreira et al.
1933    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
1934    
1935    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
1936      update output.txt of exp. fizhi-gridalt-hs
1937    o add more "Z" dimensions and associated coordinate vars to MNC
1938    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
1939    o parameter calendarDumps: when set, approximate months (30-31 days) and years
1940      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
1941      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
1942      months and years.  Requires pkg/cal.
1943    o diagnostics: add pickup functionality
1944      - off by default for backwards compatibility
1945      - current version only uses MDSIO -- MNC will be added
1946    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
1947    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
1948    
1949    checkpoint57d_post
1950    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
1951    o modify verification/ideal_2D_oce so that it tests the creation of mnc
1952      output from the diagnostics package
1953    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
1954    o make genmake2 more portable by using ".$FS" instead of ".f" for more
1955      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
1956    o add coordinate variables to the MNC output from the diagnostics package
1957    o change MNC-flags default value: true when useMNC=TRUE
1958    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
1959      the ability (off by default) to read the grid information using MNC
1960    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
1961    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
1962    o do snap-shot diagnostics at the middle of the time-interval (instead of
1963      at the end).
1964    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
1965      new test for AIM with thSIce + slab-ocean
1966    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
1967    o move state variable diagnostics to the beginning of the time step ;
1968      (note: still needs some work specially for snap-shot diagnostics)
1969      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
1970    
1971    checkpoint57c_post
1972    o Change testing option (-ieee) to get closer agreement between g77 & ifort
1973    o generate new output.txt files on faulks with g77 & the new -ieee option
1974    checkpoint57c_pre
1975    
1976    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
1977      update output.txt of exp. global_ocean.90x40x15
1978    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
1979      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
1980    o add saltFlux(+File) forcing capability with periodicExternalForcing
1981    o allow to use pkg diagnostics for GM-Redi & ThSIce output
1982    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
1983    o improvements for the MNC output from DIAGNOSTICS:
1984      - correct handling of the unlimitied dimension
1985      - all dims now have associated coordinate variables
1986      - variables located at U, V, and Corner ("Z") points are now written
1987        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
1988        *all* data points are output
1989    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
1990    o added pkg/seaice/seaice_monitor.F
1991    o mdsio_readfield.F can now read files visible only to master MPI process.
1992    o pkg/seaice: some test code for ice-modified ocean stress
1993    o exf_getffields interpolation defaults to bilinear for all scalar forcing
1994      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
1995      spurious negative numbers for precipitation and humidity.  Will cause
1996      some small numerical differences for integrations using pkg/exf/exf_interp.F.
1997    o pkg/ctrl/
1998      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
1999        May be enabled via doPackDiag
2000      *  introduce z-scaling of
2001         + gradient (doZscalePack) and
2002         + control (doZscaleUnpack)
2003    o pkg/mdsio/
2004      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
2005      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
2006    
2007    checkpoint57b_post
2008    o simplify options in diagnostics_fill arguments (remove weird combinations)
2009    o fix MNC coordinate variables so that they now contain per-face index
2010      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
2011      general, EXCH2 grids are only aligned to a "local" coordinate system
2012    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
2013    o Implement instantaneous output within pkg diagnostics:
2014      setting a negative frequency in data.diagnostics produces
2015     "snap-shot" output (as opposed to time-average if freq > 0)
2016    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
2017      NOTE: change ptracer diagnostics name: use 2 characters to work with
2018            more than 9 tracers. Add also diagnostics of advect & diffus flux.
2019    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
2020      becomes the coordinate variable for the 'T' dimension
2021    o add CF-style coordinate variables to MNC
2022      - just a first cut:  numbers are meaningless on the cubesphere and
2023        missing along the T axis but otherwise it works!
2024    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
2025    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
2026    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
2027      this is based directly on what the model compute, so that the content of
2028      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
2029    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
2030    o clean up build options files for SunOS, in particular
2031      - remove -traditional from xmakedepend
2032      - change -xarch=v9 to -xarch=native for f77
2033      - restore use of make (not gmake)
2034      - add CC=gcc if using g77
2035    o changes per discussion of AM, JMC, & EH3 today:
2036      - move redundant "grid" variables out of "state" -- in preparation of
2037        creating proper CF-style coordinate variables and in recognition
2038        that any/all grid variables can be easily copied (eg. w/NCO) from
2039        the grid files into any of the other NetCDF files
2040      - *always* output grid variables with MDSIO (this will eventually be
2041        changed)
2042      - output MNC grid file if useMNC is true
2043    o every instance of _END_MASTER() has been found and replaced with
2044      _END_MASTER( myThid ) in order to satisfy certain picky Sun
2045      preprocessors
2046    o re-arrange diagnostics pkg initialisation:
2047     - allow each package to extend the available diagnostics list
2048     - add some checking and fix small problems (multi-threaded, ...)
2049     - new S/R diagnostics_fill (replace fill_diagnostics):
2050       look through the short list of active diag. (instead of the long list)
2051       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
2052    
2053    checkpoint57a_post
2054    o this set of changes restores TAMC compatibility
2055      tested for global_ocean.90x40x15 adjoint on trough
2056      (what a pain)
2057    
2058    checkpoint57a_pre
2059    o some modifs in tools/build_options for sunos
2060    o call ctrl_pack for ctrl at end for optimcycle=0
2061    
2062    checkpoint57
2063    o add horizontal bi-harmonic viscosity for vertical velocity
2064      - new parameter viscA4W (defaults to viscA4)
2065      - affects only non-hydrostatic code
2066      - to be done: no-slip lateral boundary conditions
2067    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
2068    o implement Implicit Vertical advection for pTracers
2069    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
2070      (implemented also for implicit vertical diffusion & advection)
2071    o OBCS: extend application of tracer open boundary conditions
2072      to a strip beyond the boundary of width Olx/Oly
2073    o add call monitor to TAF set of required calls (flow directives)
2074      and include in natl_box_adjoint
2075    o untangle a few ifdefs related to cost, ctrl, autodiff
2076      untangel a few ALLOW_ECCO_OPTIMIZATION
2077    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
2078      (theta2, salt2 in ecco_cost_weights)
2079    
2080    checkpoint56c_post
2081    o OBCS as control variables
2082      - update ctrl_ad_diff.list, obcs_ad_diff.list
2083      - remove balance of obcs controls from default
2084      - fix index bug nobcs in ctrl_init
2085      - fix dummy fields filen in ctrl_pack
2086      - add dummy weights for obcs
2087    o lsopt: comment out fort.94 output
2088    o optim:
2089      - remove unnecessary header files
2090      - adjusted namelists
2091      - add xerbla.F to Makefile
2092    o exf:
2093      - multiple modifications of exf_check_range
2094      - unit change in exf_init_runoff from [m/year] to [m/s]
2095    o mdsio:
2096      - i/o-vector change debugLevel from debLevA to debLevB
2097    
2098    checkpoint56b_post
2099    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
2100      is called from DO_THE_MODEL_IO
2101      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
2102      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
2103      - clean up PTRACERS_WRITE_TIMEAVE a little
2104    o add another verification experiment that tests both the cfc-pkg and
2105      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
2106      reactive tendencies treated inline with regular timestepping
2107    o testreport previously did a lousy job of comparing small numbers, so
2108      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
2109      implemented in the little c-progam tmp_cmpnum.c which is embedded in
2110      testreport.
2111    o ptracers_monitor: bug fix for MPI
2112    
2113    checkpoint56a_post
2114    o GCHEM: finish reorganizating the package
2115      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
2116        (introduces another 3D-array for each passive tracer, but only if
2117        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
2118        gchemTendency is not needed because the timestep is done separately)
2119      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
2120      - GCHEM is now---more or less cleanly---separate from PTRACERS
2121      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
2122        so clear to me how that should be done in a general way.
2123    o CFC: improve formatting of output in CFC_ATMOS
2124    o PTRACERS:
2125      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
2126        that ALL experiments with ptracers enable can be checked. This makes
2127        GCHEM_MONITOR obsolete.
2128      - include a runtime parameter PTRACERS_monitorFreq that defaults to
2129        monitorFreq
2130      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
2131    o add PTRACERS (PTR0[1-5]) to testreport output
2132    o exf_check_range:
2133      * default changed to .TRUE.
2134      * will check values for niter0 if debLevA, every timestep if debLevB
2135      * STOP in exf_check_range if 'out of range'
2136      * range chosen generous to allow for potential extema
2137      TBD: a version with stricter range
2138           permitted range would be runtime parameters
2139    o GMredi:
2140      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
2141      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
2142      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
2143    o GCHEM:
2144      - move call to GCHEM_FORCING_SEP, so that it is now called before
2145        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
2146      - introduced a useGCHEM runtime flag and applied it everywhere.
2147      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
2148        this flag is now only visible within GCHEM-pkg routines.
2149      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
2150        be replaced by a 3D array that is computed before thermodynamics; for
2151        this, the tracer ID iTracer had to be included into the parameter list
2152        of ptracers_forcing
2153      - set up forward_step to call gchem_forcing, that will replace
2154        gchem_forcing_int in ptracers_forcing
2155      - cleaning up
2156    o small cleaning of exch2: remove files that are also in eesupp/src
2157    
2158    checkpoint56
2159    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
2160    o mnc: cleanup "full" files--fixes out-of-memory problem
2161    o ECCO-GODAE
2162      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
2163      * fully merged and updated from SIO code
2164        windstress sign change affects
2165        - exf_inscal_[u/v]stress
2166        - sign of xx_tau[u/v] adjustments
2167        - signs in cost_scat
2168      * ctrl_get_gen: avoid update of tau[u/v] for first few days
2169      * natl_box_adjoint updated and compressed
2170      * 2-level checkpoint switch added
2171        (tested in EXP. 1 of natl_box_adjoint)
2172      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
2173    o SVD
2174      * first complete, non-hacked version for SVD calculations
2175      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
2176        performed via direct access files admtlm_vector.it????
2177        (via ctrl_[un]pack)
2178      * optimcycle is used for ARPACK iteration counter
2179        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
2180      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
2181        and add linear transforms where necessary
2182      * controls are initial/final SST, SSS (can be extended; need to check
2183        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
2184    o mdsio: filename info to both stderr, stdout
2185    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
2186      from sign change
2187    
2188    checkpoint55j_post
2189    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
2190      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2191    o add consistent build directories and .cvsignore files to verification
2192    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
2193    o make all subroutines 30 or less characters in length for certain older
2194      compilers to work (a thorough search only turns up two routines in
2195      pkg/ptracers)
2196    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
2197      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
2198    
2199    checkpoint55i_post
2200    o change arrays for total vertical diffusivity (2.D if explicit,
2201      3.D if implicit) ; each ptracer uses its own background value.
2202    o added mnc/NetCDF output capability to ocn_compon_interf
2203      - added bits to verification/cpl_aim+ocn so that it can run on
2204        ITRDA and other clusters without the mpirun "-wd" option
2205    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
2206      configuration
2207    o give MNC the ability to create additional files rather than
2208      exceeding a specified file size limit "MNC_MAX_FILESIZE"
2209      - the default is just less than 2GB which is a practical limit
2210        on many systems
2211    o Compute the non-local term using either KPP vertical diffusivity (=default)
2212       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
2213    
2214    checkpoint55h_post
2215    o add verification test "vermix"
2216    o remove all the *_ioinc flags and replace with the single global
2217      outputTypesInclusive flag
2218    o allow to set a vertical profile of vertical diffusivity for T & S
2219    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
2220    o useMNC moved from data.mnc to data.pkg
2221    
2222    checkpoint55g_post
2223    o Renaming carbon AD experiments to comply with testreport conventions
2224    o Updating adjoint of Held-Suarez hs94.1x64x5
2225    o Fixing directives for non-ECCO forward_step, after ECCO directives
2226      have been fixed to avoid recomp. of do_oceanic_phys
2227      Works well for global_ocean.90x40x15,
2228      but recomp. issue remains for carbon
2229    o Updating adjoint output for natl_box_adjoint after
2230      pkg/ecco has been modified (see taga c55d_post)
2231    
2232    checkpoint55f_post
2233    o rename to timeave_init_fixed
2234    
2235    checkpoint55e_post
2236    o some delicate re-shuffle of store directives to avoid one
2237      extra call of do_oceanic_physics
2238      affects ecco_the_main_loop.F, do_oceanic_physics.F
2239      checkpoint_lev1_directives.h
2240    o NB: this may break global_ocean adjoint temporarily,
2241      but it is clear how to fix it. Will do later, need this now.
2242    
2243    checkpoint55d_post
2244    o ECCO specific cost function terms (up-to-date with 1x1 runs)
2245    o ecco_cost_weights is modified to 1x1 runs
2246    o modifs to allow observations to be read in as
2247      single file or yearly files
2248    o enable to read exf forcing fields as either
2249      single file or yearly files (flag useExfYearlyFields)
2250    checkpoint55d_pre
2251    
2252    o switch between 2-level and 3-level checkpointing
2253    o add ability of MNC to write local and "partial" (eg. 2D slices where
2254      the full 3D field is never actually stored) arrays to NetCDF files
2255      with the correct (that is, the complete multi-dimensional) set of
2256      array indicies
2257      - used in mom_vecinv() to write the diagFreq output
2258      - tested (demonstrated) in verification/aim.5l_cs
2259    o further mnc-ification
2260      - add verification/lab_sea to the list with mnc setups
2261      - fix undefined mnc v-names in cd_code
2262      - add kpp to mnc output (both snapshot and timeave)
2263    o non-hydrostatic code
2264      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
2265        in calc_gw.F
2266      - defaults to viscAh
2267      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
2268        friction or Leith) in non-hydrostatic mode, as long as there is
2269        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
2270    o pkg/cost
2271      extend simple cost functions to treat time mean quantities
2272      (T,U,V) via cost_accumulate_state from cost_tile
2273    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
2274        be 2 times larger than the minimum size the advection scheme requires.
2275        now get a perfect conservation of salt in advect_cs test-exp (updated)
2276    o GGL90 (Gaspar's TKE mixed layer)
2277      - add horizontal diffusion of TKE, requires exchanges in
2278        do_fields_blocking_exchanges, horizontal diffusivity is zero by
2279        default. In OPA there is no horizontal diffusion of TKE but the
2280        mixing coefficients are computed from a horizontal average of TKE of
2281        6 points or so. I think that diffusion has a little more physical
2282        justification.
2283      - clean up ggl90_calc in the hope of reducing memory usage (this hope
2284        was in vain)
2285      - mask tke-variable in ggl90_init
2286    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
2287    o fix biharmonic diffusion on CS-grid.
2288    o more obcs stuff
2289      - added obcs_external_fields_load as an alternative to the EXF-pkg option
2290        for reading boundary values. This routine is called from
2291        obcs_prescribe_read
2292      - updated obcs_check
2293      - changed sponge layer relaxation parameter units for days to seconds
2294      - turned off sponge layer by default
2295      - changed argument list of OBCS_CALC to myTime+deltaTclock
2296      - fixed about 35 bugs in obcs_external_fields_load
2297    
2298    checkpoint55c_post
2299    o obcs stuff
2300      - new runtime flags useOBCSprescribe, useOBCSbalance
2301      - re-arranged obcs_calc
2302      - moved exf_getobcs to obcs_prescibe_read
2303        obcs_prescibe_read is called after ORLANSKI stuff
2304        and independent of it (executable can contain all).
2305      - updated obcs_check
2306      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
2307        These may be necessary only if tangential velocities are
2308        prescribed at OB, not sure, needs testing.
2309    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
2310      which simplifies the calls and passes the ifc check-bounds test
2311    
2312    checkpoint55b_post
2313    o add a 2D scalar, Z location, exchange_2 routine.
2314    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
2315      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
2316      affects advect_cs results (for the wrong reason): update output.txt
2317    o use a more standard discretization for biharmonic viscosity ;
2318     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
2319      affects results of dome set-up: update output.txt
2320    o fix gad_advection.F (CubedSphere part), back to version 1.23
2321    o fix bug in mom_vi_del2uv.F (CubedSphere part).
2322    
2323    checkpoint55a_post
2324    o merged code to
2325      * prescribe/read time-dependent open boundaries
2326        (works in conjunction with exf, cal)
2327      * sponge layer code for open boundaries
2328      * each boundary N/S/E/W now has its own CPP option
2329        (healthy for the adjoint)
2330    
2331    checkpoint55
2332    o up-to-date adjoint of previous breaks
2333      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
2334      - global_ocean_ebm: adjoint still needs fix (TLM ok)
2335      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
2336      - carbon: * remove tr1-related adjoint verification
2337                * add ptracer as control variable
2338    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
2339      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
2340    
2341    checkpoint54f_post
2342    o in verification/carbin/ remove experiment related to
2343      ALLOW_PASSIVE_TRACER (array tr1 etc)
2344      code_ad/ input_ad/ results_ad
2345    
2346    o add two new packages
2347      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
2348        + subject to optimization (memory)
2349      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
2350        + subject to reordering (many GOTOs in the original code)
2351        + so far opps is called for every (i,j) point, and then operates in
2352          the vertical; one may want to reorder the scheme in order operate in
2353          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
2354          fields)
2355    o overhaul of IO so that we now have flags for MDSIO and/or MNC
2356      - all verification tests compile and run with linux_ia32_g77
2357      - defaults are compatible with current input files--nothing
2358        should change if you were not previously using MNC
2359      - MNC output has been added in numerous places (eg. timeave)
2360        but there are still a few writes not yet do-able with MNC
2361        (this is in progress)
2362      - flags now allow for either/or/both use of MDSIO and MNC and
2363        documentation will soon follow
2364      - numerous small formatting cleanups for ProTeX
2365    o add version info (via BUILD_INFO.h) to MNC and stdout
2366    
2367    checkpoint54e_post
2368    o add two new packages
2369      - pp81 (Packanowski and Philander, 1981), Richardson number and
2370        stratification dependent mixing
2371      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
2372      - these scheme operate in a similar manner as KPP (without ghat, of
2373        course), however there is only one diffusivity that is used for both
2374        temperature and salinity (and passive tracers)
2375    o add offline package
2376    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
2377      provided by Stephanie Dutkiewicz
2378    o genmake2: add ability to search for C compilers and cleanup test output
2379      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
2380    
2381    checkpoint54d_post
2382    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
2383    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
2384      leading to additional shift by 5 days each year of integration
2385       (i.e. leading to considerable offset over the years)
2386    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
2387    o start with no AB and no initial filtering (staggerTimeStep):
2388      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
2389    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
2390      (external loading & cpl import/export stay in forward_step.F)
2391    o update coupling interface to work with new staggerTimeStep
2392    o change MDSIO ptracers_pickup.
2393    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
2394    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
2395    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
2396    
2397    checkpoint54c_post
2398    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
2399      this affects (truncation error) output.txt of test-exp:
2400       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
2401    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
2402    o change Qnet to always be the net heat flux, (+upward).
2403      affects (truncation error) output of natl_box exp.: updated
2404    o define the max number of passive tracers in PTRACERS_SIZE.h
2405    o start to test mnc routinely in exp0
2406    o add sea-ice loading (sIceLoad) as a new forcing field.
2407    
2408    checkpoint54b_post
2409    o add testreport "-j JOBS" option for parallel builds (tested and pretty
2410       impressive on Altix and Opteron systems)
2411    o diagnostics can now write NetCDF files through the mnc package
2412    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
2413    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
2414    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
2415      affects (truncation error) output of lab_sea & natl_box exp.: updated
2416    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
2417    
2418    checkpoint54a_post
2419    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
2420    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
2421    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
2422    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
2423      + internal_wave (shift in writing cg2d_ini_res)
2424    checkpoint54a_pre
2425    
2426    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
2427      - modified verification/lab_sea and natl_box_adjoint accordingly
2428    
2429    checkpoint54
2430    checkpoint53g_post
2431    o prepare splitting of thermodynamics: store convect.counter in common block
2432    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
2433      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
2434    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
2435    o new parameter "nShapS": allow to treat differently S from T (nShapT)
2436    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
2437    o restore adjointability
2438    
2439    checkpoint53f_post
2440    o modifications that affect AIM experiment results (update output.txt):
2441      - no advection of S at top interface Nr (pkg/generic_advdiff)
2442      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
2443    o AIM pkg:
2444      - include stability function into surf.Flux derivative relative to Tsurf
2445      - calculate clear-sky radiation & surface temp. change (for diagnostics)
2446    
2447    checkpoint53e_post
2448    o merged cylindrical coord configuration
2449    o added rotating_tank experiment
2450    checkpoint53e_pre
2451    
2452    checkpoint53d_post
2453    o faulks upgraded: re-generate output.txt that have changed:
2454       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
2455    o Added Bryan and Lewis, 1979, vertical diffusivity profile
2456    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
2457    o added Sadourny discretization of Coriolis
2458      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
2459      - re-enabled use of omega3 (useAbsVorticity)
2460    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
2461      vector-invariant equations
2462      - note: does *NOT* yet use same variable visc. for no-slip BC's.
2463    o recoded the lateral boundary conditions for non-hydrostatic w, this time
2464      hopefully without new bugs
2465      - still to do: biharmonic friction for non-hydrostatic w
2466    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
2467    o regenerated output for global_ocean_ebm (using -ieee)
2468    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
2469      of mom_common/
2470      - simple re-arrangement of instructions within computing loop
2471    checkpoint53d_pre
2472    
2473    checkpoint53c_post
2474    o new version of coupler for AIM+thSIce and Ocean models
2475     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
2476     - land: change Evaporation of snow
2477     - aim with thSIce: fix bug in snow-precip.
2478    o changes to calc_gw.F
2479     - bug fix for w^2 term near the bottom boundary
2480     - (hopefully) improve the lateral slip boundary condtions for use with
2481        partial/looped cells
2482      - because the bug fix changes two verification experiments anyway (exp5
2483        and plume on slope), change the lateral boundary condition from half slip
2484        to the value of no_slip_sides
2485    o ebm package wasnt quite up to the parallel task. Fixed that.
2486    o Adjoint of EBM package + verification
2487      * TLM OK
2488      * ADM not sufficient accuracy yet (needs further testing)
2489    
2490    checkpoint53b_post
2491    o Commiting new energy balance model to repository
2492      * package is pkg/ebm
2493      * verif. is verification/global_ocean_ebm
2494      * references are in ebm_driver.F
2495    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2496    C        Global thermohaline circulation. Part I:
2497    C        Sensitivity to atmospheric moisture transport.
2498    C        J. Climate 12(1), 71-82
2499    C      * X. Wang, P. Stone and J. Marotzke, 1999:
2500    C        Global thermohaline circulation. Part II:
2501    C        Sensitivity with interactive transport.
2502    C        J. Climate 12(1), 83-91
2503    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
2504    C        Destabilization of the thermohaline circulation
2505    C        by atmospheric eddy transports.
2506    C        J. Climate 7(12), 1870-1882
2507    o Will need long integration testing.
2508    checkpoint53b_pre
2509    
2510    o created pkg/mom_common in preparation for variable viscosity code
2511    o renamed and split ini_mnc_io
2512    o pkg/land: only liquid water can diffuse or run-off
2513    o AIM using land: soil wetness availability account for snow
2514    o added printMapIncludesZeros to EEPARMS namelist
2515    
2516    checkpoint53a_post
2517    o restore TAMC compatiility for exf_constants.h
2518      (no usage of _d in .h)
2519    o Additional storing in KPP in an attempt to fix
2520      TAMC problem with adjoint of KPP code.
2521      (no success...)
2522      Identical code works fine with TAF.
2523    o Fixed verification/natl_box_adjoint experiments.
2524      Initial conditions for Experiments 4 and 5 are now
2525      set to "SEAICE_initialHEFF=0", which is more reasonable,
2526      and hence gives results closer to that of Experiment 2.
2527      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
2528    
2529    checkpoint53
2530    o stable checkpoint with up to date adjoint
2531      TLM tests only run for 1st grdchk at the moment. Its unclear if
2532      this is a code problem or a problem with resetting code for g_
2533      variables that is being autogenerated wrong.
2534      Otherwise:
2535       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
2536       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
2537         are both still in chaos following their security messes.
2538    
2539    checkpoint52n_post
2540    o various build (mostly genmake2) changes including:
2541      - ability to build/run more easily within Cygwin and MacOS X
2542      - more complicated Makefiles with a stronger dependence on Gnu Make
2543    o pkg/seaice modifications
2544      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
2545        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
2546        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
2547      - changed proxy for geostrophic velocity and updated
2548        verification/lab_sea/results/* accordingly
2549      - removed ADI dynamic solver from pkg/seaice
2550      - replaced all occurrences of 1/CSTICE or 1/CSUICE
2551        they caused a segmentation fault under certain circumstances
2552      - removed unused field WATR
2553    o bug fix in exf-package:
2554      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
2555         now reflect that.
2556    o small fixes in the cal-package:
2557      - set reference date to first of January for the 'model'-calendar
2558      - failing of cal_CheckDate in cal_FullDate now actually results in a
2559        warning
2560    o small modifications in exf-package to increase flexibility:
2561      - change climtempfreeze from a constant to a runtime parameter that
2562        is specified in data.exf_clim (default = -1.9)
2563      - introduce runtime parameter windstressmax (default = 2.0) that is
2564        specified in data.exf
2565    o fix in pkg/thsice:
2566      - update Evap (Tsf changes) to be consistent with Latent heat flux
2567      - maintain snow precipitation unchanged (even if Tsf >=0).
2568     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
2569    
2570    checkpoint52m_post
2571    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
2572      this does not change any of the results, because myIter=0 in swfrac always
2573      lead to jwtype=2 (the default anyway), but the call makes little sense
2574      as a default
2575    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
2576    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
2577      atmospheric model (AIM) to use it ; add a "slab ocean" component.
2578    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
2579    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
2580    o extending useSingleCpuIO option to work with new exch2 I/O format
2581      - old-style, missing-tile I/O is still accessible by defining CPP
2582        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
2583    o monitor package can write to NetCDF files and/or STDOUT
2584    o fix re-definition bug in MNC_GRID_INIT_ALL()
2585    o doc/api_reference added
2586      - a framework for building an API Reference Manual using all
2587        the "protex" comments embedded in the code
2588      - see pkg/generic_advdiff, pkg/mnc for examples
2589    o MNC:
2590      - make myThid the last argument for all subroutines
2591      - new default for the grid files: NO halos
2592      - add useMNC and other run-time flags
2593      - separate per-file-group handling of the unlimited dimension
2594      - early initialization of MNC w/ flags read at the eeboot stage
2595        and lookup tables set in initialize_fixed
2596      - write all MNC output to a freshly-created directory
2597    o thermodynamics sea-ice (thsice) is now tested with testreport.
2598    o test exp. advect_cs: use the standard cs32 grid ; update output.
2599    o Added functionality to grdchk:
2600      pick global i,j,k position (or nearest wet) where to perform check.
2601    
2602    checkpoint52l_post
2603    o new land formulation:
2604      a) use ground enthalpy as prognostic variable to ensure exact
2605         energy conservation.
2606      b) account for water temperature and for latent heat of freezing
2607         in all processes (rain, run-off, ground storage)
2608      c) compute surface and ground temperature implicitly.
2609    o aim_v23 modification for new land model:
2610      a) Treat separately land / ocean / sea-ice surface fluxes
2611         to allow implicit computation of land & sea-ice surface temp.
2612      b) add snow precipitation.
2613    checkpoint52l_pre
2614    
2615    o fix problem (when 1 tile is empty) in min/max monitor.
2616    o fix bug in timeAve (u,vZetatave in common block)
2617    o no restoring terms under ice for pkg/seaice
2618    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
2619    o bug fix for pkg/seaice pickups
2620    o change MNC call locations and add coordinate attributes
2621    o mask vorticity at the corner ; affects global_ocean.cs output
2622    o fix ini_curvilinear_grid ; test CS experiments with mpi
2623    o aim.5l_cs: modify sea-ice fraction input file ; update output
2624    o exf: Adding simple range check routine for exf fields after read
2625    
2626    checkpoint52k_post
2627    o removed top-level directory "diags"
2628      - we migrated these functions to pkg/timeave a long time ago
2629    o fixed bug introduced in pkg/monitor
2630    o accuracy ctrlprec = 32 insuffient for gradient checks using
2631      averaged fields (I/O via cost_averages)
2632      -> use ctrl.h in active_file*.F to control I/O precision.
2633    o paramter list of CALL ADTHE_MAIN_LOOP
2634    o added initial do_the_model_io to ecco
2635    o set all ...Freq to zero after cost_final
2636      taveFreq, dumpFreq, pChkptFreq
2637    o MAIN and ECCO differentiability restored
2638    
2639    checkpoint52j_post
2640    o fix nchklev in tamc.h for global_ocean...
2641    o Bringing flow and store directives up-to-date
2642    o Really weird thing!
2643      call do_the_model_io from the_main_loop with parameters
2644      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
2645      TAF places a faulty re-call of initialise_varia
2646      after cost_final call which should not be there!
2647    checkpoint52j_pre
2648    
2649    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
2650      error messages
2651    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
2652    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
2653      debug output
2654    o modfied mdsio_writefield.F to handle non-global files under exch2
2655    o update AIM Cubed-Sphere exp (aim.5l_cs):
2656      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
2657    o update AIM Equatorial Channel exp:
2658      use standard aim_v23 pkg and change the SST fields to be more realistic.
2659    o globalFile now works with exch2
2660    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
2661      mon_vort3.F to make exch2 friendly with >1 tile per cube face
2662    o limit timeave output for hi-res integrations
2663    
2664    checkpoint52i_post
2665    o removed CPP_EEOPTIONS.h from verification/*/code
2666    o updated the tiling for global_ocean_pressure
2667    checkpoint52i_pre
2668    
2669    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
2670      the old pkg/aim).
2671    
2672    checkpoint52h_pre
2673    o shortened offending lines in exch2_send_rx?.template
2674    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
2675    o genmake2: add build & execute test for NetCDF code
2676    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
2677      old grid files, moved CPP_EEMACROS.h to pkg/exch2
2678    o added useSingleCPUIO flag to monitor.F and mon_out.F
2679    o added temporary hack for sea-ice dynamics on the cube:
2680      metric terms are ignored and it is assumed that
2681      there is no sea-ice on cube faces 1, 2, 4, and 5.
2682    
2683    checkpoint52f_post
2684    o added exch2 cube routines to pkg/exch2
2685    o modified hs94.cs-32x32x5 to use it
2686    o added new grid files to hs94.cs-32x32x5
2687    checkpoint52f_pre
2688    
2689    checkpoint52e_post
2690    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
2691      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
2692    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
2693      to work with implicit vertical advection and AB ;
2694    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
2695    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
2696     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
2697    checkpoint52e_pre
2698    
2699    o fix bug in impldiff when Nr=1 or Nr=2.
2700    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
2701    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
2702    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
2703      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
2704    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
2705    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
2706    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
2707    
2708    checkpoint52d_post
2709    o re-tiled many expts to allow comparison in multi-processor mode
2710      - updated output accordingly
2711      - changed hs94.128x64x5 to use intial T from file rather than use the
2712        random number generator
2713    o add infrastructure in model routines for fizhi and gridalt packages
2714    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
2715    o changes to permit hi-res, cubed-sphere, configuration
2716      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
2717      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
2718      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
2719        of surface winds for the cube
2720      (A verification experiment, based on global_ocean.cs32x15, but with
2721       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
2722       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
2723       complete with example surface forcing files and matlab scripts to look
2724       at the output and compare it with that of global_ocean.cs32x15.)
2725    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
2726       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
2727       to conform to the common rule.
2728    o check-in the first version of the coupler + interfaces for multi-components
2729       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
2730       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
2731       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
2732       - ocean and atmos. share the same horizontal grid (no interpolation).
2733       - exchanges between component and coupler is done in forward_step
2734    o new verification experiment, cpl_aim+ocn:
2735       coupled ocean - AIM atmosphere on cs32 grid.
2736    
2737    checkpoint52d_pre
2738    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
2739    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
2740    
2741    checkpoint52c_post
2742    o Fixing OPTIONS files for use of exf:
2743      - ALLOW_ECCO not needed
2744      - ECCO_CPPOPTIONS.h should not be included from
2745        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
2746        as has been the case in the past
2747      - All cal/exf related options are currently set in
2748        single header file. Should remain so until we
2749        agree on a consistent new policy.
2750    o Removed all CPP options for cal package.
2751      cal has no more CPP options.
2752    o modified STOREs in GAD_ADVECTION
2753    o corrected key comp. for passkey
2754    
2755    checkpoint52b_post
2756    o new version: "thsice" of thermodynamic sea-ice pkg:
2757     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
2758     - modify fluxes but do not change theta directly;
2759     - light cleaning of bulk_force pkg (still needed with thsice).
2760     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
2761       + output_thsice.txt to test thsice & bulk_force pkgs.
2762    o put back grid & coriolis monitor output.
2763    checkpoint52b_pre
2764    
2765    o call "do_the_model_io" at the beginning (=> dump initial state)
2766    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
2767    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
2768      (need info on NUMBER_OF_PTRACERS)
2769    o missing PTRACERS headers in some routines
2770    o default tamc.h in pkg/autodiff supposed to crash
2771      to ensure proper customization
2772    
2773    checkpoint52a_post
2774    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
2775      - moved surfaceTendencyTice from pkg/seaice to main code
2776      - subroutine FREEZE_SURFACE now limits only surface temperature
2777        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
2778        => new output.txt for global_ocean.cs32x15 & global_with_exf
2779      - keep the old version of FREEZE for backward compatibility;
2780        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
2781      - corresponding modifs for TAF directives
2782    o added surface flux output variables to TIMEAVE_STATVARS
2783    o time-averaged output for pkg/ptracers
2784    o fix problem with ECCO-related divided adjoint
2785      snapshot file was missing some ad-variables,
2786      but no warning issued by TAF
2787    
2788    checkpoint52a_pre
2789    o some bug fixes for #undef REAL4_IS_SLOW
2790    
2791    checkpoint52 = ecco_c52_e35
2792    o after testing adjoints of checkpoint51u_post
2793    
2794    checkpoint51u_post
2795    o this is the post-merge tag of the ecco-branch
2796      (needs another clean checkout and re-testing)
2797    o various natl_box_adjoint configs and results
2798      but no input fields
2799    o obcs adjoint not yet merged!
2800    o adding ECCO global 1x1 and 2x2 degree configs
2801    o updated/extended some store directives for seaice
2802    o pkg/ecco now containes ecco-specific part of cost function
2803    o top level routines the_main_loop, forward_step
2804      supersede those in model/src/
2805      previous input data.cost now in data.ecco
2806      (new namelist ecco_cost_nml)
2807    o in ctrl/ cleaned some cross-dependencies and updated CPP options
2808    
2809    checkpoint51t_post
2810    o this is the pre-merge tag of the ecco-branch
2811    
2812    checkpoint51s_post
2813    o cleanup: removed various obsolete #define-s
2814    o pkg/grdchk
2815      - renamed 'ph-grd 3' to 'grad-res'
2816      - merged from ecco-branch
2817        (remaining bug fixes for obcs gradient checks)
2818      - additional high-precision output for testreport
2819        (grep for 'precision_grdchk_result')
2820    
2821    checkpoint51r_post
2822    o cleaned up or removed CPP_OPTIONS.h files
2823    o updated results for some of the tests to reflect the new
2824      optfiles (-ieee: -O0 instead of -O3)
2825    
2826    checkpoint51q_post
2827    o cd_code:
2828      - moved cd_scheme.F -> cd_code_scheme.F
2829      - separate read_checkpoint from cd_code_ini_vars.F
2830      - separated cd_code part from write_checkpoint
2831      - updated AD_SOURCE, generated .flow
2832      - added CD_CODE_VARS.h to the_main_loop
2833      - Moving cd_code specific store dir.s to pkg/cd_code
2834    o ctrl package totally restructured
2835      - pack/unpack now optional and decoupled from
2836        xx_/adxx_ I/O
2837      - ctrl_pack/unpack cleaned
2838        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
2839      - confined inclusion of AD_CONFIG.h to where necessary.
2840    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
2841    
2842    checkpoint51p_post
2843    o create initial cd_code package
2844      - WARNING: the initialization of fields within packages
2845        is broken because INI_FIELDS (where READ_CHECKPOINT is
2846        called) is called *before* PACKAGES_INIT_VARIABLES.
2847        This seems to be backwards since
2848        1) its important to initially zero the entire field including
2849           the "halo" region
2850        2) zeroing needs to be done *before* reading pickup info
2851           and the pickup call might or might not happen in any
2852           particular run
2853      - this needs an overhaul for R2
2854    o cleanup verification/*/code/GMREDI_OPTIONS.h
2855    o cleanup testreport
2856    
2857    checkpoint51o_post
2858    o bringing AD-related verif's up to date with genmake2
2859      - carbon/
2860      - global_ocean.90x40x15/
2861      - hs.94.1x64x5/
2862      - (front_relax/ )
2863    o (more) consistent directory structure for AD-related verif.'s
2864    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
2865    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
2866    o bug fix in find_alpha.F for MDJWF:
2867      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
2868        change rho -> rho-rhoConst
2869      - replace call find_rho to find_rhonum
2870    o initialisation of rFlx extended to full array (required by TAF)
2871      and shifted to thermodynamics
2872    o removed PTRACERS.h in ptracers routine
2873    o added surfacetendencyPtr to S/R parameter list pracers_forcing
2874    o Correcting initialisations for fVerU, fVerV.
2875    o helping TAF to recognize dependency on kUp for
2876      fVerU, fVerV
2877    o Replacing delZ by delR in pkg/ctrl/
2878    checkpoint51o_pre
2879    
2880    o undid all of cp51 pending some cleanups and discussion
2881    o added the [#include "AD_CONFIG.h"] statement to all files that need
2882       it for adjoint/tl #defines
2883     o re-worked the build logic in genmake2 to support AD_CONFIG.h
2884     o removed tools/genmake since it no longer works
2885    
2886    checkpoint51n_post
2887    o modifications to make FREEZE flux visible to pkg/kpp
2888      - moved surfaceTendencyTice from pkg/seaice to main code
2889      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
2890      - subroutine FREEZE now limits only surface temperature
2891        (this means new output.txt for global_ocean.90x40x15,
2892         global_ocean.cs32x15, and global_with_exf)
2893    o added surface flux output variables to TIMEAVE_STATVARS
2894    
2895    checkpoint51n_pre
2896    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
2897    o added [#include "AD_CONFIG.h"] to all files that use the following
2898      defines:
2899      - ALLOW_ADJOINT_RUN
2900      - ALLOW_TANGENTLINEAR_RUN
2901      - ALLOW_ECCO_OPTIMIZATION
2902    
2903    checkpoint51m_post
2904    o incorporating changes to get TAMC/TAF working in genmake2
2905      - added new TAMC/TAF targets to the Makefile
2906      - various cleanups related to package handling
2907      - these changes should have no impact on the forward model
2908    
2909    checkpoint51l_post
2910    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
2911     - faster algorithm for cal_addtime.F
2912     - higher precision arithmetic, where needed
2913     - pkg/exf *startdate variables changed from calendar date to
2914       model integration time
2915    
2916    checkpoint51l_pre
2917    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
2918    o enable to apply restoring on S & T only in a latitude band.
2919    o update output (external_forcing_surf modif. change truncation errors)
2920       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
2921    
2922    checkpoint51k_post
2923    o change default to: useNHMTerms=.FALSE.
2924     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
2925       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
2926     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
2927        exp1, ideal_2D_oce
2928     - change data file of oceanic exp (leave the results unchanged for now)
2929       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
2930    o set gravitySign automatically according to the vertical coordinate used
2931      (and change sign: back to "logical" value: +1 when R increases downward)
2932    o added an include barrier to the default CPP_OPTIONS.h and
2933      removed the #include "PACKAGES_CONFIG.h" from it
2934    o fix a bug in mom_fluxform (from chk51j_post)
2935    
2936    checkpoint51j_post
2937    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
2938    o adjusted some flow directives (dynamics, thermodynamics)
2939    o added cubed-sphere case to test cost function
2940    o heckpoint_lev?_directives.h now include
2941      pkg-specific directives, whenever those are enabled.
2942    o Moving pkg-specific flow directives to corresponding pkg
2943      Moving pkg-specific differentiation list to corresponding pkg
2944      Moving pkg-specific checkpoint-lev storing to corresponding pkg
2945      ---> conventions are
2946           - pkg_ad.flow
2947           - pkg_ad_diff.list
2948           - pkg_ad_check_lev?_dir.h
2949    
2950    checkpoint51i_post
2951    o merge of the branch-genmake2
2952      - knowingly breaks the older genmake
2953      - automatic generation of all ALLOW_${PKG_NAME} defines
2954      - new testreport supersedes older testscript
2955    o large number of package inclusion and header cleanups
2956    checkpoint51i_pre
2957    
2958    o new output for adjoin of global ocean vector invariant
2959    o fix for checkpoint of thermodynamic seaice and bulk_force
2960    o Steph gchem various cleanups
2961    
2962    checkpoint 51h_pre
2963    o fixed some single quotes
2964    o modify gchem pkg to be more versatile
2965    o modifications to clean up dic pkg
2966    o add pkg/cfc
2967    
2968    checkpoint51g_post
2969    o provide links for ARPACK and ADM*TLM
2970    o start removing verification/vero/
2971    o update AD-related stuff
2972      (in particular some IF-statements in model/src/ routines)
2973    o adding to verification/global_ocean.90x40x15/ adjoint of
2974      vector invariant setup
2975    
2976    checkpoint51f_post
2977    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
2978    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
2979      of tracer Green's fucntions for ocean inversion project.
2980    
2981    checkpoint51f_pre
2982    o Added on-the-fly spatial interpolation capability
2983        "USE_EXF_INTERPOLATION" to pkg/exf.
2984      - This is a temporary Cartesian-grid hack until
2985        the super-duper ESMF coupler becomes available.
2986      - See verification/global_with_exf/README for usage example.
2987      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
2988        flags and modified pkg/seaice accordingly.
2989    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
2990        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
2991        non-local transport term.
2992    
2993    checkpoint51e_post
2994    o pkg/mom_vecinv:
2995      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
2996      - add time-ave diagnostic of vorticity advection.
2997    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
2998    o atmospheric geopotential: - include water vapor effect;
2999                                - use p^kappa in p* scaling.
3000    o land pkg: read initial state from files.
3001    o AIM : add stratospheric drag in the upper level
3002    
3003    checkpoint51d_post
3004    o change function ILNBLNK (=> last non-blank char.) to return zero
3005      (instead of the string length) when the string. char is empty
3006    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
3007    o modif's to restore TAMC compatibility
3008      - avoid "_d" constructs in PARAMETER declarations
3009      - avoid interrupting lines by comment lines
3010    o Use cluster local disks for purely local I/O
3011      vs. globally visible disks needed for ctrl stuff
3012      (merged from ecco-branch)
3013      - new active_file_loc... and mdsio_..._loc routines
3014      - affected packages: autodiff, ctrl, grdchk, mdsio
3015    
3016    checkpoint51c_post
3017    o introducing integer flag debugLevel
3018      - debLevZero: suppress all output
3019      - debLevA: standard
3020      - debLevB: equivalent to current debugMode=.TRUE.
3021    o introducing pathname variable mdsioLocalDir for mdsio
3022      that can be specified at runtime
3023      (relevant for cluster I/O to local disk)
3024    `
3025    >>>checkpoint51b_post
3026    adjoint of ptracers
3027    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
3028    o extended state in checkpoint_lev?, etc.
3029    o alternative ctrl/cost with tr1 or ptracer
3030    o new comlev1_bibj_ptracers
3031    o new ptracers.flow
3032    o made ptracers_forcing same as external_forcing_s
3033    o added verification for adjoint with ptracers
3034      - adm. grdchk fail so far
3035      - tlm. grdchk OK
3036      - checked tapelev/comlev recomputations: OK
3037    <<<checkpoint51b_pre
3038    
3039    checkpoint51a_post
3040    o added code for biogeochemistry package
3041      - new pkgs: dic, gchem
3042      - new subroutine in ptracers
3043    o modify code for biogeo packages
3044      - in model/src and pkg/ptracers
3045    
3046    checkpoint51
3047    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
3048      - autodiff, ctrl, exf, grdchk, seaice
3049      kept separate packages
3050      - cost, ecco, obcs
3051    o updating verification/internal_wave, verification/lab_sea
3052      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
3053    
3054    checkpoint50i_post
3055    o Preparing next differentiable checkpoint and sync
3056      of MAIN vs. ecco-branch
3057      - 1st step: this one is differentiable
3058      - 2nd step: next(! not this) checkpoint will have updated packages
3059                  from ecco-branch)
3060    
3061    checkpoint50h_post
3062    o new package "land": provide surface BC for AIM.
3063    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
3064    o AIM: use true log-P extrapolation for near surface temp (= as in
3065        F.Molteni paper) ; update aim.5l_cs output.
3066    o New variable in PARM03 for more flexible pickups
3067    o somewhat cleaned package initialisation sequence for
3068      ctrl/ cost/ ecco/ in packages_... routines
3069    
3070    checkpoint50g_post
3071    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
3072      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
3073      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
3074        made the default because of faster convergence than ADI
3075    
3076    checkpoint50f_post
3077    o exf totally restructured
3078      - replaced all exf_set_ routines by one generic exf_set_gen.F
3079        and made sure it's still differentiable
3080      - split exf_getffields.F into new exf_bulkformulae.F
3081      - exf_inscal_/exf_outscal_ suffixes consistent with field names
3082      - updated adjoint/makefile and relevant verif. accordingly
3083    
3084    checkpoint50f_pre
3085     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
3086          + change Evap over land. (update aim.5l_cs output)
3087     o added missing .cvsignores and made uniform across expts
3088     o changed configuration of tidal_basin_2d expt
3089     o added pkg/debug functions for tracing code in fatal crashes
3090     o tidied pkg/monitor to use MONITOR_OPTIONS.h
3091     o new fn in pkg/monitor to stop model if solution grows too big
3092     o removed lots of single quotes from comments
3093    
3094    checkpoint50e_post
3095    o make KPP work with PTRACERS
3096     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
3097       nearly a copy of kpp_transport_s
3098     - there is no analogue to SurfaceTendencyS, so I have to use
3099       gPtr(of the surface layer) instead
3100    o add a new platform SunFire+mpi (SunFire 15000) to genmake
3101    checkpoint50e_pre
3102    
3103    checkpoint50d_post
3104    o change kpp output from multiple-record state files to single-record state
3105      files analogous to write_state.F
3106    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
3107      analogous to the cg2d-related output.
3108    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
3109      so that writing to internal file fn (with length 512) fails.
3110    checkpoint50d_pre
3111    
3112    checkpoint50c_post
3113    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
3114    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
3115    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
3116    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
3117    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
3118    
3119    checkpoint50c_pre
3120    Merging from release1_p13:
3121    o bug fix for pkg/seaice dynamic solver
3122    o Added SEAICE_initialHEFF to pkg/seaice
3123    
3124    checkpoint50b_post
3125    o store u*,v* in gU,V instead of in guNm1,gvNm1
3126    o in order to put the momForcing out of the Adams-Bashforth:
3127      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
3128      to timestep.F
3129    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
3130    o re-generate output for highly sensitive test-exp:
3131       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
3132    
3133    checkpoint50b_pre
3134    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
3135    o corrected CPP option mismatch in exf_Bulk... functions for case
3136      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
3137    
3138    checkpoint50a_post
3139    o Bug fix for merging between c50 and KPP.
3140      ikey was passed from thermodynamics to kpp_calc via
3141      common block rather than being recomputed in kpp_calc,
3142      in contradiction with new key itdkey.
3143      New key ikppkey created, and tamc.h headers updated.
3144    
3145    checkpoint50
3146    - 2nd step of merge with ecco-branch:
3147      merge changes in ecco-branch back into main trunk
3148    - bug fix in find_alpha
3149    - more storing in gmredi_calc_tensor.F, kpp_routines.F
3150    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
3151    - merged some sliced AD support routines
3152    
3153    checkpoint49
3154    merged from ecco-branch:
3155    o exf:
3156      - Enable initialisation of forcing fields to constant
3157        (runtime) values.
3158      - in exf_getffields.F
3159        Reduce i-/j-loop to interior domain, discarding overlaps.
3160        That also fixes wrong TAF-key computations for key_1, key_2
3161        with bulf formulae.
3162      - exf_init.F modify #ifdef for exf_init_evap
3163      - exf_getffieldrec.F, ctrl_getrec.F
3164        The following INT-usages are not safe:
3165          fldsecs  = int(fldsecs/fldperiod)*fldperiod
3166          fldcount = int(fldsecs/fldperiod) + 1
3167        and were modified.
3168    o autodiff: checkpoint_lev...
3169      - updated storing for bulk formulae (some arrays were missing)
3170      - added state for seaice package
3171      - synchronized with main branch
3172    o DIVA:
3173      Modif.s in
3174      - the_main_loop.F
3175      - the_model_main.F
3176      and added cost_final_restore.F cost_final_store.F
3177      o With these changes, it is possible to fully separate
3178        the first forward run to compute the cost function (mdthe_main_loop)
3179        and adjoint runs over individual DIVA intervals (adthe_main_loop)
3180        into separate model executions.
3181        This enables better tuning of DIVA to given queue sizes.
3182      o Loss of cost function value in consecutive DIVA runs is
3183        fixed by storing to 'costfinal' file.
3184      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
3185        beginning/end of adjoint integration is accounted for.
3186      The current changes apply to TAF-1.4.26.
3187      TAF has one remaining bug, requiring one manual change
3188      (see MITgcm manual).
3189    o cal: synchronized between MAIN and ecco-branch
3190    
3191    checkpoint48i_post
3192    o Changes to restore differentiability of code w.r.t. previous tag
3193      (mostly adding new routines to make list and replacing
3194      pressure by totPhiHyd).
3195    o Updated and merged grdchk package
3196      - has both ADM and TLM checks
3197      - works for single- and multi-proc.
3198      - output cleaned
3199      - worked successfully for parallel DIVA
3200    o genmake:
3201      - Adding -platform=SP4
3202      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
3203    o Modif. for DIVA:
3204      ctrl_unpack should not be called in intermediate DIVA interval.
3205      (similar thing would apply for active files such as
3206      tbar, sbar, psbar, which should not be reinitialised;
3207      only relevant for ecco-branch)
3208    
3209    checkpoint48h_post
3210    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
3211    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
3212    o Added SEAICE_initialHEFF to pkg/seaice
3213    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
3214    
3215    checkpoint48g_post
3216    --- EOS:
3217    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
3218      store total Potential in totPhyHyd for diagnostics & EOS.
3219    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
3220    --- Pressure/geopotential gradient:
3221    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
3222    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
3223      ( changes results of global_ocean_pressure )
3224    o NLFS + z-coord.: add eta*Rho' contribution.
3225    o accurate phiHyd when using interface-W at the middle between 2 centers
3226     ( changes results of ideal_2D_oce )
3227    o includes r* 2nd term in potential gradient.
3228    
3229    checkpoint48f_post
3230    Merging from release1_p12:
3231    o Modifications for using pkg/exf with pkg/seaice
3232      - improved description of the various forcing configurations
3233      - added basic radiation bulk formulae to pkg/exf
3234      - units/sign fix for evap computation in exf_getffields.F
3235      - updated verification/global_with_exf/results/output.txt
3236    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
3237      (SBO) core products, including oceanic mass, center-of-mass,
3238      angular, and bottom pressure (see pkg/sbo/README.sbo).
3239    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
3240      to avoid negative values in shallow regions.
3241      - updated verification/natl_box/results/output.txt
3242      - updated verification/lab_sea/results/output.txt
3243    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
3244    o Added useSingleCpuIO option (see PARAMS.h).
3245    o Updated useSingleCpuIO option in mdsio_writefield.F to
3246      work with multi-field files, e.g., for single-file pickup.
3247    o pkg/seaice:
3248      - bug fix in growth.F: QNET for no shortwave case
3249      - added HeffFile for specifying initial sea-ice thickness
3250      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
3251    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
3252      kpp_transport_t.F, forward_step.F, and the_main_loop.F
3253    o pkg/seaice:
3254      - adjoint-friendly modifications
3255      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
3256    
3257    checkpoint48e_post
3258    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
3259    o dynamics: change definition of computational domain & adapt mom_fluxform
3260      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
3261    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
3262        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
3263        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
3264        global_ocean.90x40x15 global_with_exf global_ocean_pressure
3265        inverted_barometer solid-body.cs-32x32x1
3266      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
3267    
3268    checkpoint48d_post
3269    o in preparation for r*:
3270     a) use pre-computed gradient of hydrostatic potential:
3271        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
3272     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
3273        => affects results of glob_oce_pressure (different truncation error)  
3274      update output.txt of ideal_2D_oce & global_ocean_pressure
3275    
3276    checkpoint48d_pre
3277    o in preparation for r*:
3278      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
3279      pass the 2 comp. of the grad. as arguments to momentum S/R.
3280      but for the moment, only used if it does not change the results.
3281    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
3282    
3283    checkpoint48c_post
3284    Modifications in treatment of initial flux forcing controls
3285    to avoid extra storing of flux fields.
3286    
3287    checkpoint48c_pre
3288    o Added tidal_basin_2d experiment (currently 1D!)
3289    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
3290    
3291    checkpoint48b_post
3292    o r* coordinate added in #ifdef NONLIN_FRSURF block.
3293     (modification to pressure gradient not yet implemented)
3294    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
3295      (for U & V) that are used for vertical advection of momentum.
3296    
3297    checkpoint48a_post
3298    o In preparation for r*, use temp. array to compute vertical transport
3299       in flux-form momentum pkg. => change results of few test-exp.
3300      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
3301                        lab_sea, natl_box & plume_on_slope
3302    
3303    checkpoint48
3304    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
3305    
3306    checkpoint47j_post
3307    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
3308    o moved adexch from forward_step to addummy_in_stepping
3309    o added exch in ctrl_map_...
3310    o aveFreq.=0. at end of cost_final to avoid overwrite in
3311      reverse checkpointing loop
3312    o Yet more changes in gmredi:
3313      * adgmredi_calc_tensor
3314        avoiding all recomputation of gmredi_slope_limit
3315      * adgmredi_x/y/rtransport
3316        added flag for excessive storing to avoid recomp. of
3317        u/v/rtans, dTdx/y/z
3318        -> this is not really necessary and very memory-consuming
3319      * adgmredi_slope_psi:
3320        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
3321      * gmredi_slope_limit
3322        re-activated full calculation of taperfct for case 'ac02'
3323    o updating verification/ adjoints of carbon, global_ocean.90x40x15
3324    
3325    checkpoint47i_post
3326    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
3327    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
3328      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
3329    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
3330    o gmredi: fix few bugs.
3331    
3332    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
3333    This will be a good checkpoint to plug into the ecco-branch.
3334    o few modif.'s to get latest version adjointed
3335      (mainly kick out code in ini_linear_phisurf)
3336    o modif's to run adjoint with exactConserv
3337    o case GM_BOLUS_ADVEC should be cleaned
3338      S/R gmredi_slope_psi should be cleaned
3339    o verification/carbon now has exactConserv=.TRUE.
3340    
3341    checkpoint47g_post
3342    o time-average AIM output: becomes independent from statvars time-average
3343      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
3344    o After TAF bug fix:
3345      Tested adjoint of gmredi package.
3346      Tests were done with checkpoint47 rather than with latest
3347      checkpoint47f_post since the latter is broken for the adjoint
3348      verification/carbon/ contains both ADM and TLM gradient checks.
3349    Here they are, before they get changed/lost/stolen.
3350    Mostly modif.'s to fix numerical sensitivities.
3351    Gradient checks OK for
3352    - GM_taper_scheme:
3353      * clipping
3354      * ac02
3355      * linear
3356      * glw91
3357      * dm95
3358      * ldd97
3359    - GMREDI_OPTIONS:
3360      * GM_VISBECK_VARIABLE_K
3361      * GM_NON_UNITY_DIAGONAL
3362      * GM_EXTRA_DIAGONAL
3363      * GM_BOLUS_ADVEC
3364    in conjunction with data.gmredi parameters to be checked in
3365    in a few minutes under verification/carbon/code/
3366    
3367    checkpoint47f_post
3368    Merging from release1_p10:
3369    o modifications for using pkg/exf with pkg/seaice
3370      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
3371        and SEAICE_EXTERNAL_FLUXES
3372      - pkg/exf CPP options EXF_READ_EVAP and
3373        EXF_NO_BULK_COMPUTATIONS
3374      - usage examples are Experiments 8 and 9 in
3375        verification/lab_sea/README
3376      - verification/lab_sea default experiment now uses
3377        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
3378    
3379    checkpoint47e_post
3380    o created a tag prior to creating a branch
3381    
3382    checkpoint47d_post
3383    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
3384      at the bottom boundary had an erroneous half slip boundary condition
3385    o added bottom drag and no slip boundary condition capabilities to
3386      oceanic pressure coordinates code
3387    o added new verification experiment global_ocean_pressure, this experiment is
3388      also described in the tutorial section of the manual
3389    checkpoint47d_pre
3390    
3391    checkpoint47c_post
3392    o Added a verification experiment for a global cubed-sphere ocean run
3393      -  verification/global_ocean.cubed32x32x30
3394      -  uses pkg/therm_seaice and pkg/bulk_forcing
3395    
3396    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
3397    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
3398      when using P-coordinate; only implemented for atmospheric config.
3399    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
3400      NOTES: requires option NONLIN_FRSURF to be "#define".
3401    o update advect_xz/results/output.txt (left from checkpoint44g_post)
3402    
3403    checkpoint47b_post
3404    Merging from release1_p9:
3405    o pkg/seaice
3406      - removed GOTO's and added taf directives
3407      - double precision constants to reduce the g77 (Linux)
3408        to F77 (SGI) differences reported in release1_p8
3409    o tools/genmake
3410      - added SGI options
3411    o verification/testscript
3412      - updated to that of checkpoint47a_post
3413    o verification/global_ocean.90x40x15/input/eedata
3414      - modified for SGI f77 compatibility
3415    o verification/lab_sea
3416      - added description of sea-ice model
3417      - added missing matlab routines
3418      - added test of thermodynamics parallelization
3419    
3420    checkpoint47a_post
3421    o new pkg: aim_v23
3422     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
3423       for now, keep the same surface forcing as before.
3424     - Part-Cell implemented into AIM; check that Heat & Water are conserved
3425     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
3426     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
3427    o add diagnostic of surface correction term in monitor output
3428    
3429    o bulk_force and therm_seaice
3430    - Two packages:  bulk_force (Bulk forcing)
3431      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
3432    - Earlier integration from Stephaine Dutkiewicz
3433      and Patrick Heimbach.
3434    - Two ifdef statements for compile time,
3435       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
3436    
3437    checkpoint47
3438    differentiable version of checkpoint46n_post
3439    o bug fix in quasihydrostaticterms
3440    o * "clean" adjoint code (in terms of extensive recomputations)
3441        can now be obtained for all GMREDI options (i.e. for
3442        - GM_VISBECK_VARIABLE_K
3443        - GM_NON_UNITY_DIAGONAL
3444        - GM_EXTRA_DIAGONAL
3445        - GM_BOLUS_ADVEC )
3446      * However, wrong gradient check problem remains unsolved.
3447      * New CPP options have been introduced for different
3448        tapering schemes
3449    o external_fields_load now part of differentiation list
3450    o pressure needs multiple storing;
3451      would be nice to have store_pressure at beginning or
3452      end of forward_step, e.g. by having phiHyd global (5-dim.)
3453      (NB: pressure is needed for certain cases in find_rho,
3454      which is also invoked through convective_adjustment).
3455    o recomputations in find_rho for cases
3456     'JMD95'/'UNESCO' or 'MDJWF' are OK.
3457    o #define ATMOSPHERIC_LOADING should be differentiable
3458    o ini_forcing shifted to begining of initialise_varia
3459    o Incorporating QNVS line search routines into MITgcm
3460      (this is separate code, and therefore not under pkg)
3461      lsopt/, optim/
3462    o Updated verification/carbon/
3463      - #define GM_VISBECK_VARIABLE_K
3464      - GM_taper_scheme    = 'ldd97'    
3465    
3466    checkpoint46n_post
3467    Merging from release1_p8:
3468    o verification/natl_box:
3469      updating new external_fields_load routine
3470    o New package: pkg/seaice
3471      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
3472      The sea-ice code is based on Hibler (1979-1980).
3473      Two sea-ice dynamic solvers, ADI and LSR, are included.
3474      In addition to computing prognostic sea-ice variables and diagnosing
3475      the forcing/external data fields that drive the ocean model,
3476      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
3477      The implied surface heat flux is then stored in variable
3478      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
3479      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
3480      non-local transport term.  Because this call precedes model
3481      thermodynamics, temperature under sea-ice may not be "exactly" at
3482      the freezing point by the time theta is dumped or time-averaged.
3483      N.B.: fairly large differences in accuracy occur across
3484            different platforms/compilers; comparison between
3485            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
3486            generated output gives:
3487       T           S           U           V
3488      C D M    c        m  s        m  s        m  s        m  s
3489      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
3490      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
3491      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
3492    
3493      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
3494    o GAD:
3495      - generated new common blocks to account for call of
3496        same gad routines with differing traceridentities
3497        (needed to modify tracerIdentity indices in GAD.h)
3498      - generated separate common blocks for case useCubedSphereExchange
3499        (Department of Futurology)
3500      - parameter lists to gmredi_?transport: added tracerIdentity
3501      - added new key indices to tamc.h
3502    o external_fields_load:
3503      - added this routine to TAF list
3504      - needed to make some common blocks global and additional storing
3505        along the same lines as exf package (checkpoint_lev?_directives.h)
3506    o exf:
3507      updated external forcing package
3508      - bug fixes carried over from ecco-branch
3509        (missing OBCS_OPTIONS.h in two routines)
3510      - enable easy to use "no forcing".
3511      - added exf I/O for atmospheric loading
3512      - added exf I/O for runoff data
3513      - transfered scaling between exf <-> MITgcm to exf namelist
3514    o Adding new verification experiment global_with_exf.
3515      This verification experiment is almost identical to the
3516      global_ocean.90x40x15 experiment, except that it uses
3517      the exf (and cal) package instead of the
3518      external_fields_load routine (cf README file).
3519    
3520    checkpoint46m_post
3521    o modified testscript to return -- when there are no lines of "%MON" output
3522    o added new flag "quasiHydrostatic" for QH mode
3523      and new routine quasihydrostaticterms()
3524    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
3525      New routine: mom_u_coriolis_nh()
3526    o fixed sign of non-hydrostatic metric terms in u and v equations.
3527      Depend on correct sign of gravitySign.
3528    o added work.pc* to .cvsignore in aim directories using ifc
3529    o introduced flag for controllin non-hydrostatic metric terms
3530    o removed gravitySign from PARM04
3531    o switched to g77/ifc from pgf77 in aim experiments
3532    
3533    checkpoint46l_post
3534    o made convective adjustment work with pressure coordinates:
3535     - changed the direction of k-loop in convective_adjustment.F for the
3536       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
3537     - adjusted the reference pressure k-index in convective_adjustment.F
3538     - adjusted the convection condition in convect.F (in analogy to
3539       calc_ivdc.F)
3540     - convective_adjustment no longer computes anything on the halos
3541     - removed the warnings about negative salinity from find_rho.F and
3542       find_alpha.F; instead the new routine look_for_neg_salinity, called
3543       at the beginning of find_rho, find_alpha, and find_beta, does a
3544       check of the entire slice, if CPP-option
3545       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
3546    checkpoint46l_pre
3547    
3548    checkpoint46k_post
3549    o fixed the verification/global_ocean.90x40x15 experiment:
3550     - new bathymetry (the world according to A., JMC, and M.)
3551     - new initial fields and forcing fields (*.bin files)
3552     - new POLY3.COEFFS (for the next release one should switch to a full
3553       equation of state: JMD95P or MDJWF)
3554     - fixed several errors and redundancies in the data file
3555     - experiment uses looped cells
3556     - added matlab directory with diagnostic scripts for plotting of output
3557    
3558    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
3559     - read AIM physics parameters from a file (data.aimphys)
3560     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
3561    
3562    checkpoint46j_post
3563    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
3564    o move wVel computation at the end of the time step, in S/R integr_continuity
3565    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
3566    o update timeave pkg for wVel diagnostic.
3567    checkpoint46j_pre
3568    
3569    checkpoint46i_post
3570    o Clean up AIM package (and keep the results unchanged):
3571      include CPP_OPTION and use IMPLICT NONE in all routines ;
3572      declare all the variables _RL ; use _d 0 for all numerical constants.
3573      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
3574    
3575    checkpoint46h_post
3576    o cleaned up the use of rhoNil and rhoConst.
3577      - rhoNil should only appear in the LINEAR equation of state, everywhere
3578        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
3579        and the dynamical equations are all divided by rhoConst
3580    o introduced new parameter rhoConstFresh, a reference density of fresh
3581      water, to remove the fresh water flux's dependence on rhoNil. The default
3582      value is 999.8 kg/m^3
3583    o cleanup up external_forcing.F and external_forcing_surf.F
3584      - can now be used by both OCEANIC and OCEANICP
3585    checkpoint46h_pre
3586    
3587     Added code to convert surface volume flux (fresh water) into
3588     a mass flux when using P coordinates in the ocean (OCEANICP).
3589     Note: It assumes you have set rho0=rhoConst=density of fresh water.
3590    
3591    checkpoint46g_post
3592    o Include a new diagnostic variable phiHydLow for the ocean model
3593      - in z-coordinates, it is the bottom pressure anomaly
3594      - in p-coordinates, it is the sea surface elevation
3595      - in both cases, these variable have global drift, reflecting the mass
3596        drift in z-coordinates and the volume drift in p-coordinates
3597      - included time averaging for phiHydLow, be aware of the drift!
3598    o depth-dependent computation of Bo_surf for pressure coordinates
3599      in the ocean (buoyancyRelation='OCEANICP')
3600      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
3601        Theta, Salinity, and Pressure in the parameter list. This routine is
3602        presently contained in find_rho.F. This routine does not give the
3603        correct density for 'POLY3', which would be a z-dependent reference
3604        density.
3605    o cleaned up find_rho
3606      - removed obsolete 'eqn' from the parameter list.
3607    o added two new verification experiments: gop and goz
3608      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
3609    checkpoint46g_pre
3610    
3611    checkpoint46f_post
3612    o Enable tangent linear (forward mode) gradient checks:
3613      - extended active file handling to g_... files
3614      - added TANGENT_SIMULATION to theSimulationMode
3615      - extended grdchk package accordingly
3616    o added tangent linear setup in verification/carbon/code_ftl
3617    o added adjoint setup in verification/front_relax/code_ad
3618    
3619    checkpoint46e_post
3620    o Added new equation of state -> MDJWF
3621      - EOS of McDougall et al., 2002, JAOT, submitted
3622      - caveat: the equation of state is only valid for a smaller (more
3623        realistic?) range of values than JMD95P/Z and UNESCO
3624      - added masks to the calculation of pressure in store_pressure
3625      - added more check values for density in check_eos (ini_eos.F), some of
3626        the old check values are out of the range of the MDJWF-eos, so don't
3627        expect perfect matches for those
3628    checkpoint46e_pre
3629    
3630    checkpoint46d_post
3631    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
3632      'OCEANICP', also initialised field pressure correctly in ini_eos in the
3633      case of pressure coordinates. eosType='JMD95Z' in
3634      combination with buoyancyRelation='OCEANICP' now causes an error.
3635    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3636      in find_alpha/beta.
3637    checkpoint46d_pre
3638    
3639    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
3640      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
3641    
3642    checkpoint46c_post
3643    o Changes necessary for ocean in p-coordinates
3644     -  Added new buoyancy relation = 'OCEANICP'
3645     -  Added new parameters = gravitySign (this used to be contained inside
3646        the factor dRdZ which I added when we first switched to R coordinates).
3647     X GM/Redi is not compatible (yet)
3648     X bottom drag and no-slip need to be debugged.
3649    checkpoint46c_pre
3650    
3651    checkpoint46b_post
3652    o Added new equation of state -> JMD95Z and JMD95P
3653      - EOS of Jackett and McDougall, 1995, JAOT
3654      - moved all EOS parameters into EOS.h
3655      - new routines ini_eos.F, store_pressure.F
3656    o Added UNESCO EOS, but not recommended because it requires
3657      in-situ temperature (see JMD95)
3658    o Modified formatting for knudsen2.f in utils/knudsen2 and added
3659      unesco.f to be used with POLY3
3660    checkpoint46b_pre
3661    
3662    checkpoint46a_post
3663    o Added (atmospheric) pressure loading
3664      - new field in FFIELDS.h, etc...
3665      - new cpp flag ATMOSPHERIC_LOADING
3666    o Changed hFacC to _hFacC in calc_phi_hyd.F
3667    o Added SHORTWAVE_HEATING to some files for consistency
3668    checkpoint46a_pre
3669    
3670    checkpoint46
3671    further merges from release1_p5
3672    o new ctrl package
3673      - adopted from ECCO environment to enable optimization
3674      - added Eliassen Palm fluxes to controls
3675    o added Eliassen Palm flux controls to gradient check package
3676    o cost package
3677      - Compatible with new ctrl package
3678      - added Eliassen Palm cost hooks
3679      - modif's of existing cost functions
3680    o Adjoint-related bug fixes in kpp:
3681      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
3682      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
3683    o autodiff package
3684      - flow directives:
3685        + new for S/R do_the_model_io
3686        + enhanced for S/R checkpoint
3687        + new gmredi.flow
3688      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
3689        disable adcommon.h/g_common.h by default.
3690      - fixed problem for adjoint of global_max
3691    o modified verification/carbon/
3692    o New setup for adjoint of global_ocean
3693    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
3694    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
3695    o incorporated hooks for sponge layer code (external_forcing.F)
3696    
3697    checkpoint45d_post
3698    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
3699    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
3700      (affects plume_on_slope "cg2d" output)
3701    o add new parameter deltaTfreesurf for free-surface time stepping
3702    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
3703    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
3704    o change phiMin in exp1 (to agree with documentation)
3705    o add new flags:
3706     - T,S forcing inside/outside Adams-Bashforth
3707     - turn off temp,salt advection and/or forcing
3708     - for each tracer, define internal flag for multiDimAdvection & A-B
3709    o monitor: change definition of KE to check conservation of Energy
3710    
3711    checkpoint45c_post
3712    o Removed f90 comments ("!")
3713    o Modified initialisations to enable exf package for MITgcm
3714      (without invoking ECCO_PACKAGE).
3715    o modifications to gradient check package (Martin Losch)
3716      - enable centered differences
3717      - modified format of standard output
3718    
3719    checkpoint45b_post
3720    o cleaned exchange calls in cg2d
3721    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
3722    o included CPP option SINGLE_LAYER_MODE in thermodynamics
3723      to configure barotropic setup (Martin Losch)
3724    o moved some initialisations within bi,bj loop in dynamics
3725      (TAF flow dependency)
3726    o in initialise_varia, moved call packages_init_variables
3727      before convective_adjustment_init
3728      (corresponding adjustment of TAF tape initialisation).
3729    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
3730    
3731    checkpoint45a_post
3732    o compute Rho over the whole domain (extend iMin,jMin indices)
3733    o specific exchange for X-slice domain (case Ny=1)
3734    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
3735    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
3736    
3737    checkpoint44h_post = checkpoint45
3738    o Fix to restore differentiability:
3739      place at which packages_init_variables is called in
3740      initialise_varia is crucial for reverse control flow.
3741    o modifications in GMRedi to enable stable adjoint
3742      (corresponding modif's in thermodynamics, dynamics)
3743    o added missing hook for sponge layer code in external_forcing
3744    o modified test cost functions
3745    o storing in gad_advection (plus removal of write(0,*)!
3746    o missing headers TR1.h added in convective_adjustment routines
3747    o errorMessageUnit set non-equal zero in eeboot
3748      (conflict on some platforms, e.g. IBM SP3)
3749    o modified carbon verif.
3750    
3751    checkpoint44h_pre
3752    o vertical grid option: allow to put the Interface at the middle between
3753      2 cell-centers ; replace delZ in pkg/kpp by drF.
3754    o GM Advective form: Tracers are advected using the residual transport (=
3755      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
3756    
3757    checkpoint44g_post
3758    o fix surface correction term in multiDimAdvection (affects plume_on_slope
3759      results) ; ifdef missing in thermodynamics.F
3760    
3761    checkpoint44f_pre,checkpoint44f_post
3762    o added PTRACERS package
3763      This allows an arbitrary number of passive tracers to be integrated
3764      forward simultaneously with the dynamicaly model.
3765      + Implemented so far:
3766        - basic forward algorithm (time-stepping, advection, diffusion, convection)
3767        - I/O and checkpointing
3768        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
3769      + Not implemented so far:
3770        - KPP
3771        - OBCS
3772      + No specific example supplied (yet) but global_ocean.90x40x15 has the
3773        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
3774        line in data.pkg.
3775      + This package is disabled by default since it increases storage.
3776    
3777    
3778    o testscript: added -cleanup option
3779    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
3780                 b) enable to filter 2D fields.
3781    
3782    checkpoint44e_pre,post
3783    o re-wrote convective adjustment to use pre-calculated weights
3784      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
3785      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
3786      Original calls to convect() still in place.
3787    
3788    chkpt44d_pre,post
3789    o added missing EXCLUDE_MONITOR flags
3790    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
3791      (incompatible typ in MIN/MAX expressions caused problems
3792      on IBM SP3)
3793    o in genmake added variable MAKEDEPEND
3794      plus resetting for case SunOS
3795    o added timer_stats.c routine for IBM SP3
3796    o removed variables in dynamics
3797    !!! I forgot to create tag chkpt44d_pre !!!
3798    !!! But chkpt44d_pre = chkpt44c_post    !!!
3799    
3800    o real fresh water flux implemented with non-linear free-surface.
3801    
3802    chkpt44c_pre,post
3803    o few fix (mask in shap_s2, EmPmR in external_field_load,
3804      USE_NATURAL_BCS in solve_for_P);
3805    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
3806    
3807    checkpoint44b_pre/_post
3808    o merge of relevant stuff from the ecco-branch:
3809      - genmake: removed $S64 overwrite for case SunOS
3810      - pkg/exf: update and corrections for field swapping and obcs
3811      - pkg/ecco: parameter lists for the_model_main, the_main_loop
3812                  harmonized between ECCO and MITgcm
3813      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
3814                      updated checkpointing_lev... lists for obcs
3815      - model/src: minor changes in forward_step, plot_field
3816                   added directive for divided adjoint in the_main_loop
3817      - pkg/mdsio: added mdsio_gl_slice
3818    
3819    o check parameters & config (chkpt44a_pre,post)
3820    o OBC and NonLin_FrSurf.
3821    
3822    checkpoint44
3823    o fix bug in mom_vi_del2uv
3824    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
3825    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
3826    o update AIM experiments (NCEP input files)
3827    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
3828    o added some stuff for AD
3829    
3830    checkpoint43
3831    o added two new advection tests
3832    o added global 4x4 degree ocean test
3833    o added test of H&S94 with free surface on cube
3834    o some final mods for gradient check, adjoint,...
3835    
3836    checkpoint42
3837      Fixed AD-related problems:
3838    o Store directives up-to-date with re-arranged Adams-Bashforth
3839      (mainly thermodynamics.F)
3840    o New store directives for multi-dim. advection schemes
3841      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
3842      * new common block and key passkey
3843      (mainly gad_advection.F)
3844    o Modified store directives for split of dynamics/thermodynamics
3845      for the case ALLOW_KPP
3846    o Cleaned argument list for timestep_tracer.F
3847    
3848    checkpoint41
3849    o re-formatted/added comments in prologues of key subroutines
3850      to work with protex
3851    
3852    checkpoint40
3853    o moved calc_gs, calc_gt and calc_tr1 back to model/src
3854    o added FLT (floats) package from Arne along with demo. experiment
3855    o re-arranged Adams-Bashforth scheme for tracers to allow easier
3856      implementation of forward-in-time forcing terms
3857    o more mods for non-linear free-surface including new variable
3858    o modified multi-dim method to work on cube
3859    o bug fix in KPP (from DM)
3860    
3861    checkpoint40pre9
3862    o added DST advection schemes
3863    o fix MPI bug on SGI's
3864    o modifications for non-linear free-surface
3865    o fixed conditionals for fixed flow/passive tracer only mode
3866    o added tension/strain form of stress tensor
3867    o changes to commenting of arguments for TAF/TAMC
3868    o added/updated many matlab scripts
3869    o added multi-dimensional advection method for tracers
3870      
3871    checkpoint40pre8
3872    o new package rw/
3873      Added method for dumping intermediate local arrays:
3874      mdsio_writetile - same as mdsio_writefield except works from inside
3875                        bi,bj loop
3876      mdsio_writelocal - same as mdsio_writetile except works for local
3877                         arrays
3878      write_local_r? - higher-level wrapper for mdsio_writelocal
3879      Controlled by diagFreq. Defaults to zero (ie. no dumps)
3880      Example given at end of mom_vecinv.F that dumps some local arrays.
3881    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
3882      control flux-form versus vector invariant code.
3883      Switch is runtime flag vectorInvariantMomentum (defaults to false)
3884      or genmake -DISABLE ...
3885    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
3886      (additional storing is now needed for case vecinv;
3887      currently nothing implemented to switch this storing off
3888      in case fluxform is used since no CPP flag available).
3889    
3890    checkpoint40pre7
3891    o bug fix in dynamics.F
3892      calc_viscosity called before k=1,Nr loop.
3893    o added some #ifdef's ALLOW_PASSIVE_TRACER
3894    o cleaned initialisations in ctrl_map_ini
3895      related to TAF
3896    
3897    checkpoint40pre6
3898    o split dynamics into thermodynamics & dynamics
3899    o corresponding split of calc_diffusivity into
3900      calc_diffusivity, calc_viscosity
3901      (kpp_calc_diff, kpp_calc_visc).
3902    o Added diffkr, kapgm to control variables
3903    o bug fix in gmredi_slope_limit for ldd97
3904    
3905    checkpoint40pre5
3906    o proper initialization of Adams-Bashforth time stepping
3907      + uses forward step for very first step of model (iter=0)
3908    o re-generated *all* output since almost all output is modified by this
3909      change (sorry but we've been putting this one off for about 2 years)
3910      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
3911        *not* regenerated since they are already out of date and I don't
3912        want to create the impression that they are suddenly working.
3913    o removed KAP stuff for DEC's
3914    o modified/added many .cvsignore files in */code and */input
3915    o added new expt "solid-body.cs-32x32x1"
3916      + this uses an alternative form of ini_curvilinear_grid.F which
3917        is not necessarily any better than the current one...
3918    
3919    checkpoint40pre4
3920    o added re-initialisations of utrans,vtrans,rtrans in
3921      calc_common_factors which are crucial for TAF.
3922    o extended iMin,jMin range for calc_common_factors,
3923      calc_diffusivity
3924    o added option ALLOW_PASSIVE_TRACER
3925    o a few minor updates and fixes
3926    
3927    checkpoint40pre3
3928    o created calc_gtr1.F for gad package
3929    o split the_main_loop and re-introduced forward_step
3930    o some recomputations of nIter0 for TAMC
3931    
3932  checkpoint40pre2  checkpoint40pre2
3933  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
3934  o Added gradient check package  o Added gradient check package

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